SOFT MAGNETIC COMPOSITION, SINTERED BODY, COMPOSITE BODY, PASTE, COIL COMPONENT, AND ANTENNA
20230122061 · 2023-04-20
Inventors
Cpc classification
H01F1/348
ELECTRICITY
H01F1/344
ELECTRICITY
International classification
Abstract
A soft magnetic composition that includes an oxide containing a W-type hexagonal ferrite having a compositional formula of ACaMe.sub.2Fe.sub.16O.sub.27 as a main phase, wherein A is one or more selected from Ba, Sr, Na, K, La, and Bi at 4.7 mol % to 5.8 mol %; Me is one or more selected from Co, Cu, Mg, Mn, Ni, and Zn at 9.4 mol % to 18.1 mol %, the Ca is 0.2 mol % to 5.0 mol %, the Fe is 67.4 mol % to 84.5 mol %, and the soft magnetic composition has a coercivity Hcj of 100 kA/m or less.
Claims
1. A soft magnetic composition comprising: an oxide that contains a W-type hexagonal ferrite having a compositional formula of ACaMe.sub.2Fe.sub.16O.sub.27 as a main phase, wherein: A is one or more selected from Ba, Sr, Na, K, La, and Bi, Ba+Sr+Na+K+La+Bi: 4.7 mol % to 5.8 mol %, Ba: 0 mol % to 5.8 mol %, Sr: 0 mol % to 5.8 mol %; Na: 0 mol % to 5.2 mol %, K: 0 mol % to 5.2 mol %, La: 0 mol % to 2.1 mol %, Bi: 0 mol % to 1.0 mol %, Ca: 0.2 mol % to 5.0 mol % Fe: 67.4 mol % to 84.5 mol %, Me is one or more selected from Co, Cu, Mg, Mn, Ni, and Zn, Co+Cu+Mg+Mn+Ni+Zn: 9.4 mol % to 18.1 mol %, Cu: 0 mol % to 1.6 mol %, Mg: 0 mol % to 17.1 mol %, Mn: 0 mol % to 17.1 mol %, Ni: 0 mol % to 17.1 mol %, Zn: 0 mol % to 17.1 mol %, Co: 0 mol % to 2.6 mol %, a charge balance D is 7.8 mol % to 11.6 mol %, when: Me (I)=Na+K+Li, Me (II)=Co+Cu+Mg+Mn+Ni+Zn, Me (IV)=Ge+Si+Sn+Ti+Zr+Hf, Me (V)=Mo+Nb+Ta+Sb+W+V, and D=Me (I)+Me (II)−Me (IV)−2×Me (V), at least part of the Fe is substituted with M.sub.2d in an amount of 0 mol % to 7.8 mol %, M.sub.2d is at least one of In, Sc, Sn, Zr, or Hf, Sn: 0 mol % to 7.8 mol %, Zr+Hf: 0 mol % to 7.8 mol %, In: 0 mol % to 7.8 mol %, Sc: 0 mol % to 7.8 mol %, Ge: 0 mol % to 2.6 mol %, Si: 0 mol % to 2.6 mol %, Ti: 0 mol % to 2.6 mol %, Al: 0 mol % to 2.6 mol %, Ga: 0 mol % to 2.6 mol %, Mo: 0 mol % to 2.6 mol %, Nb+Ta: 0 mol % to 2.6 mol %, Sb: 0 mol % to 2.6 mol %, W: 0 mol % to 2.6 mol %, V: 0 mol % to 2.6 mol %, Li: 0 mol % to 2.6 mol %, and the soft magnetic composition has a coercivity Hcj of 100 kA/m or less.
2. The soft magnetic composition according to claim 1, wherein the Me is at least one of Mg, Mn, Ni, and Zn, and Mg+Mn+Ni+Zn: 7.8 mol % to 17.1 mol %.
3. The soft magnetic composition according to claim 1, wherein Co is 0.5 mol % or more.
4. The soft magnetic composition according to claim 3, wherein Co is 2.1 mol % or less.
5. The soft magnetic composition according to claim 1, wherein Co is 2.1 mol % or less.
6. The soft magnetic composition according to claim 1, wherein the amount of Mai is 1.0 mol % to 7.8 mol %.
7. The soft magnetic composition according to claim 1, wherein Sr is 0 mol %.
8. The soft magnetic composition according to claim 1, wherein the W-type hexagonal ferrite is a single phase.
9. A sintered body comprising a fired result of the soft magnetic composition according to claim 1.
10. A composite body comprising: the soft magnetic composition according to claim 1; and a nonmagnetic body.
11. A paste comprising a mixture of: the soft magnetic composition according to claim 1; and a nonmagnetic body.
12. A coil component comprising: a core portion; and a winding portion around the core portion, wherein the core portion is the sintered body according to claim 6, and the winding portion contains an electric conductor.
13. An antenna comprising: the sintered body according to claim 6, and an electric conductor.
Description
BRIEF EXPLANATION OF THE DRAWINGS
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DETAILED DESCRIPTION OF THE INVENTION
[0110] Hereinafter, the soft magnetic composition, the sintered body, the composite body, the paste, the coil component, and the antenna of the present invention will be described.
[0111] However, the present invention is not limited to the following configuration, and can be applied with appropriate modifications without changing the gist of the present invention. Any combination of two or more individual desirable configurations described below is also within the scope of the present invention.
[0112] [Soft Magnetic Composition]
[0113] The soft magnetic composition of the present invention contains W-type hexagonal ferrite as a main phase.
[0114] The soft magnetic composition means soft ferrite defined in JIS R 1600.
[0115] In the present specification, the main phase means a phase having the largest abundance ratio. Specifically, the case where the W-type hexagonal ferrite is the main phase is defined as a case where all of the following five conditions are satisfied when the measurement is performed in a non-oriented powder state. (1) When the total of the peak intensity ratios of peaks at lattice spacing=4.11, 2.60, 2.17 [nm] (diffraction angle 2θ=21.6, 34.5, 41.6° when a copper source X-ray is used; provided that the lattice spacing and the diffraction angle are based on hexagonal ferrite composed only of Ba, Co, Fe, and O, and when the lattice constant decreases due to the substitution element, the lattice spacing narrows, and when the lattice constant increases due to the substitution element, the lattice spacing widens; note that the difference in diffraction angle 20 between BaCo.sub.2Fe.sub.16O.sub.27.BaMg.sub.2Fe.sub.16O.sub.27.BaMn.sub.2Fe.sub.16O.sub.27.BaNi.sub.2Fe.sub.16O.sub.27.BaZn.sub.2Fe.sub.16O.sub.27 is about ±0.3 degrees) around which peaks derived from non-W-type hexagonal ferrites and having an intensity of 10% or more are absent is defined as A, A exceeds 80%. (2) The peak intensity ratio of a peak at lattice spacing=2.63 [nm] (diffraction angle 2θ=34.1° when a copper source X-ray is used) around which peaks derived from non-M-type hexagonal ferrites and having an intensity of 10% or more are absent is less than 80%. (3) The peak intensity ratio of a peak at lattice spacing=2.65 [nm] (diffraction angle 2θ=33.8° when a copper source X-ray is used) around which peaks derived from non-Y-type hexagonal ferrites and having an intensity of 10% or more are absent is less than 30%. (4) The peak intensity ratio of a peak at lattice spacing=2.68 [nm] (diffraction angle 2θ=33.4° when a copper source X-ray is used) around which peaks derived from non-Z-type hexagonal ferrites and having an intensity of 10% or more are absent is less than 30%. (5) The peak intensity ratio of a peak at lattice spacing=2.53 [nm] (diffraction angle 2θ=35.4° when a copper source X-ray is used), which is the main peak of spinel ferrite, is less than 90%. In the soft magnetic composition of the present invention, the W-type hexagonal ferrite may be a single phase, that is, the molar ratio of the W-type hexagonal ferrite phase may be substantially 100%.
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[0117] The crystal structure of the W-type hexagonal ferrite is represented by the structural formula A.sup.2+Me.sup.2+.sub.2Fe.sub.16O.sub.27, and is composed of stacking structures in the c-axis direction called an S block and an R block. In
[0118] As the crystal structure of the hexagonal ferrite, M-type, U-type, X-type, Y-type, and Z-type in addition to the W-type are known. Among them, the W-type has a feature that the saturation magnetization Is is higher than those of the M-type, the U-type, the X-type, the Y-type, and the Z-type. This is because W-type has a crystal factor of SSR, M-type has a crystal factor of SR, U-type has a crystal factor of SRSRST, X-type has a crystal factor of SRSSR, Y-type has a crystal factor of ST, and Z-type has a crystal factor of SRST in a combination of three crystal factors of R block, S block, and T block, W-type does not include a T crystal factor having saturation magnetization=0, and the ratio of the S crystal factor having the highest saturation magnetization is 2/3 for W-type, 3/5 for X-type, and 1/2 for M-type, U-type, Y-type, and Z-type, that is, W-type ferrite is the highest. As seen from the Snoek's relational expression of hexagonal ferrite: fr×(μ−1)=(γIs)÷(6πμ.sub.0)×{√(H.sub.A1/H.sub.A2)+√(H.sub.A2/H.sub.A1)}, the saturation magnetization Is can be increased and the resonance frequency fr can be increased, and thus, it is considered that high magnetic permeability can be obtained at high frequencies. In the Snoek's relational expression of the hexagonal ferrite, the resonance frequency fr is the frequency of the maximum value of the magnetic loss component μ″, μ is magnetic permeability, y is gyromagnetic ratio, Is is saturation magnetization, μ.sub.0 is vacuum magnetic permeability, HA is anisotropic magnetic field, H.sub.A1 is anisotropic magnetic field in one direction, H.sub.A2 is anisotropic magnetic field in two directions, and the directions are set such that the difference between H.sub.A1 and H.sub.A2 is the highest. Hexagonal ferrite is characterized in that the difference between H.sub.A1 and H.sub.A2 is as large as 10 times or more.
[0119] In the soft magnetic composition of the present invention, it is desirable that the W-type hexagonal ferrite is a single phase from the viewpoint of increasing the resonance frequency by increasing the saturation magnetization. However, small amounts of different phases such as M-type hexagonal ferrite, Y-type hexagonal ferrite, Z-type hexagonal ferrite, and spinel ferrite may be contained.
[0120] The soft magnetic composition of the present invention is an oxide having the following metal element ratio.
[0121] In the present specification, the description of “Ba+Sr” or the like means the sum of the respective elements. In addition, the following composition is a composition of a magnetic body, and in a case where inorganic glass or the like is added, the composition is treated as a composite matter described later.
[0122] The content of each element contained in the soft magnetic composition can be determined by composition analysis using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES).
Configuration 1-1: Essential Elements (Ba+Sr+Na+K+La+Bi: 4.7 Mol % to 5.8 Mol %)
[0123] In the W-type hexagonal ferrite (structural formula A.sup.2+Me.sub.2.sup.2+Fe.sub.16O.sub.27), in order to constitute A site elements corresponding to the Ba positions of the crystal structure shown in
[0124] When the amount of the A site elements is small (A=Ba+Sr+Na+K+La+Bi<4.7 mol %), or when the amount of the A site elements is large (A>5.8 mol %), the magnetic loss at 6 GHz becomes as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0125] The upper limit of the A site elements will be described in the upper limit setting of the Ba amount and the Sr amount described later. Details of setting the lower limit amount of the A site elements to 4.7 mol % are as follows.
[0126] When the A site element is only Ba and Ba amount=4.7 mol %, the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from all No. 18 in Table 1, No. 36 in Table 2, No. 54 in Table 3, and No. 72 in Table 4.
[0127] When the A site element is only Ba and Ba amount <4.7 mol %, the magnetic loss tan δ is 0.06 or more as seen from all No. 19 in Table 1, No. 37 in Table 2, No. 55 in Table 3, and No. 73 in Table 4. Thus, the lower limit of the amount of the A site elements such as Ba is set to 4.7 mol %.
[0128] The content of each element is Ba: 0 mol % to 5.8 mol %, Sr: 0 mol % to 5.8 mol %, Na: 0 mol % to 5.2 mol %, K: 0 mol % to 5.2 mol %, La: 0 mol % to 2.1 mol %, and Bi: 0 mol % to 1.0 mol %.
[0129] Details of setting Ba: 0 mol % to 5.8 mol % are as follows.
[0130] When Ba amount=5.8 mol %, in the composition system of the structural formula BaMg.sub.2Fe.sub.16O.sub.27 (hereinafter referred to as Mg.sub.2-W-type ferrite), the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 16 in Table 1.
[0131] When Ba amount >5.8 mol %, in the Mg.sub.2-W-type ferrite, the magnetic loss tan δ is 0.06 or more as seen from No. 15 in Table 1. Thus, in the Mg.sub.2-W-type ferrite, the range of Ba is set to 0 mol % to 5.8 mol %.
[0132] When Ba amount=5.8 mol %, in the composition system of the structural formula BaMn.sub.2Fe.sub.16O.sub.27 (hereinafter referred to as Mn.sub.2-W-type ferrite), the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 34 in Table 2.
[0133] When Ba amount >5.8 mol %, in the Mn.sub.2-W-type ferrite, the magnetic loss tan δ is 0.06 or less as seen from No. 33 in Table 2. Thus, also in the Mn.sub.2-W-type ferrite, the range of Ba is set to 0 mol % to 5.8 mol %.
[0134] When Ba amount=5.8 mol %, in the composition system of the structural formula BaNi.sub.2Fe.sub.16O.sub.27 (hereinafter referred to as Ni.sub.2-W-type ferrite), the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 52 in Table 3.
[0135] When Ba amount >5.8 mol %, in the Ni.sub.2-W-type ferrite, the magnetic permeability μ′ is less than 1.1, and the magnetic loss tan δ is 0.06 or more, as seen from No. 51 in Table 3. Thus, also in the Ni.sub.2-W-type ferrite, the range of Ba is set to 0 mol % to 5.8 mol %.
[0136] When Ba amount=5.8 mol %, in the composition system of the structural formula BaZn.sub.2Fe.sub.16O.sub.27 (hereinafter referred to as Zn.sub.2-W-type ferrite), the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or more, as seen from No. 70 in Table 4.
[0137] When Ba amount >5.8 mol %, in the Zn.sub.2-W-type ferrite, the magnetic permeability μ′ is less than 1.1, and the magnetic loss tan δ is 0.06 or more, as seen from No. 69 in Table 4. Thus, also in the Zn.sub.2-W-type ferrite, the range of Ba is set to 0 mol % to 5.8 mol %.
[0138] Details of setting Sr: 0 mol % to 5.8 mol % are as follows.
[0139] When Sr amount=5.8 mol %, in the Mg.sub.2-W-type ferrite, the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 307 in Table 17.
[0140] When Sr amount >5.8 mol %, in the Mg.sub.2-W-type ferrite, the magnetic loss tan δ is 0.06 or more as seen from No. 306 in Table 17. Thus, in the Mg.sub.2-W-type ferrite, the range of Sr is set to 0 mol % to 5.8 mol %.
[0141] When Sr amount=5.8 mol %, in the Mn.sub.2-W-type ferrite, the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 312 in Table 17.
[0142] When Sr amount >5.8 mol %, in the Mn.sub.2-W-type ferrite, the magnetic loss tan δ is 0.06 or more as seen from No. 311 in Table 17. Thus, also in the Mn.sub.2-W-type ferrite, the range of Sr is set to 0 mol % to 5.8 mol %.
[0143] When Sr amount=5.8 mol %, in the Ni.sub.2-W-type ferrite, the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 317 in Table 17.
[0144] When Sr amount >5.8 mol %, in the Ni.sub.2-W-type ferrite, the magnetic loss tan δ is 0.06 or more as seen from No. 316 in Table 17. Thus, also in the Ni.sub.2-W-type ferrite, the range of Sr is set to 0 mol % to 5.8 mol %.
[0145] When Sr amount=5.8 mol %, in the Zn.sub.2-W-type ferrite, the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 322 in Table 17.
[0146] When Sr amount >5.8 mol %, in Zn.sub.2-W-type ferrite, the magnetic loss tan δ is 0.06 or more as seen from No. 321 in Table 17. Thus, also in the Zn.sub.2-W-type ferrite, the range of Sr is set to 0 mol % to 5.8 mol %.
[0147] When Na amount=5.2 mol %, the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 346 in Table 21. Thus, the range of Na is set to 0 mol % to 5.2 mol %.
[0148] When K amount=5.2 mol %, the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 348 in Table 21. Thus, the range of K is set to 0 mol % to 5.2 mol %.
[0149] When La amount=2.1 mol %, the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 342 in Table 20. When La amount >2.1 mol %, the magnetic loss tan δ is 0.06 or more as seen from No. 343 in Table 20. Thus, the range of La is set to 0 mol % to 2.1 mol %.
[0150] When Bi amount=1.0 mol %, the magnetic permeability μ′ is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from all Nos. 77, 82, 87, and 92 in Table 5. When Bi amount >1.0 mol %, the magnetic loss tan δ is 0.06 or more as seen from all Nos. 78, 83, 88, and 93 in Table 5. Thus, the range of Bi is set to 0 mol % to 1.0 mol %.
[0151] The amount of Sr may be 0 mol %. When Sr is not contained, the dielectric constant decreases. Details are as follows.
[0152] In the Mg.sub.2-W-type ferrite, when Sr is contained, the dielectric constant is 30 or more as seen from No. 75 and 76 in Table 5, and when Sr is not contained the dielectric constant is 10 as seen from No. 74 in Table 5, and thus the dielectric constant can be made lower when Sr is not contained.
[0153] In the Mn.sub.2-W-type ferrite, when Sr is contained, the dielectric constant is 30 or more as seen from No. 80 and 81 in Table 5, and when Sr is not contained, the dielectric constant is 10 as seen from No. 79 in Table 5, and thus the dielectric constant can be made lower when Sr is not contained.
[0154] In the Ni.sub.2-W-type ferrite, when Sr is contained, the dielectric constant is 30 or more as seen from No. 85 and 86 in Table 5, and when Sr is not contained, the dielectric constant is 10 as seen from No. 84 in Table 5, and thus the dielectric constant can be made lower when Sr is not contained.
[0155] In the Zn.sub.2-W-type ferrite, when Sr is contained, the dielectric constant is 30 or more as seen from No. 90 and 91 in Table 5, and when Sr is not contained, the dielectric constant is 10 as seen from No. 89 in Table 5, and thus the dielectric constant can be made lower when Sr is not contained.
Configuration 1-2: Essential Element (Ca: 0.2 Mol % to 5.0 Mol %)
[0156] In order to synthesize the W-type hexagonal ferrite (structural formula A.sup.2+Me.sub.2.sup.2+Fe.sub.16O.sub.27) as a single phase, it is effective to add calcium Ca. Patent Document 3 also shows a similar effect, but unlike the reducing atmosphere in Patent Document 3 in which the generation of Fe.sup.2+ is essential, the effect is obtained by firing in the atmosphere in which Fe.sup.2+ is not generated. Patent Document 5 also shows a similar effect, but unlike the wet method in Patent Document 5 in which coprecipitate production of an aqueous solution is essential, the effect is obtained by a solid phase reaction of an oxide or the like. The amount of Ca added is defined outside the structural formula of the W-type hexagonal ferrite because Ca is considered not only to enter the A site and the Fe site but also to be deposited at the grain boundary.
[0157] By adding Ca in an amount of 0.2 mol % to 5.0 mol %, the synthesis of the W-type hexagonal ferrite is promoted, and the coercivity can be reduced to 100 kA/m or less as seen from Tables 1 to 4.
[0158] When the amount of Ca is small (Ca<0.2 mol %), or when the amount of Ca is large (Ca>5.0 mol %), the magnetic permeability at 6 GHz drops to μ′<1.10, and the magnetic loss at 6 GHz is as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Details are as follows.
[0159] In the Mg.sub.2-W-type ferrite, when Ca=0.2 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 3 in Table 1. On the other hand, when Ca is small (Ca<0.2 mol %), the magnetic permeability μ′ at 6 GHz is 1.10 or less, or the magnetic loss tan δ is 0.06 or more, as seen from Nos. 1 and 2 in Table 1.
[0160] In the Mg.sub.2-W-type ferrite, when Ca=5.0 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 7 in Table 1. On the other hand, when Ca is large (Ca>5.0 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 8 in Table 1.
[0161] In the Mn.sub.2-W-type ferrite, when Ca=0.2 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 22 in Table 2. On the other hand, when Ca is small (Ca<0.2 mol %), the magnetic permeability μ′ at 6 GHz is 1.10 or less, or the magnetic loss tan δ is 0.06 or more, as seen from Nos. 20 and 21 in Table 2.
[0162] In the Mn.sub.2-W-type ferrite, when Ca=5.0 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 26 in Table 2. On the other hand, when Ca is large (Ca>5.0 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 27 in Table 2.
[0163] In the Ni.sub.2-W-type ferrite, when Ca=0.2 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 40 in Table 3. On the other hand, when Ca is small (Ca<0.2 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 38 and 39 in Table 3.
[0164] In the Ni.sub.2-W-type ferrite, when Ca=5.0 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 44 in Table 3. On the other hand, when Ca is large (Ca>5.0 mol %), the magnetic permeability μ′ at 6 GHz is 1.10 or less, and the magnetic loss tan δ is 0.06 or more, as seen from No. 45 in Table 3.
[0165] In the Zn.sub.2-W-type ferrite, when Ca=0.2 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 58 in Table 4. On the other hand, when Ca is small (Ca<0.2 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 56 and 57 in Table 4.
[0166] In the Zn.sub.2-W-type ferrite, when Ca=5.0 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 62 in Table 4. On the other hand, when Ca is large (Ca>5.0 mol %), the magnetic permeability μ′ at 6 GHz is 1.10 or less, and the magnetic loss tan δ is 0.06 or more, as seen from No. 63 in Table 4.
Configuration 1-3: Essential Element (Fe: 67.4 Mol % to 84.5 Mol %)
[0167] In order to constitute the W-type hexagonal ferrite (structural formula A.sup.2+Me.sub.2.sup.2+Fe.sub.16O.sub.27) and exhibit ferromagnetism, iron Fe is required. Among the hexagonal ferrite phases (M-type, U-type, W-type, X-type, Y-type, or Z-type), the W-type ferrite is a crystal phase in which a large amount of Fe is required. It is generally known that when the amount of Fe is insufficient, other hexagonal ferrite phases (for example, M-type=AFe.sub.12O.sub.19, Y-type=A.sub.2Me.sub.2Fe.sub.12O.sub.22, and the like) are likely to be formed, and when the amount of Fe is excessive, a spinel ferrite phase (MeFe.sub.2O.sub.4) is likely to be formed.
[0168] When the amount of Fe is small (Fe<67.4 mol %), or when the amount of Fe is large (Fe>84.5 mol %), the magnetic loss at 6 GHz becomes as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Details are as follows.
[0169] In the Mg.sub.2-W-type ferrite, when Fe=67.4 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from Nos. 129, 135, 144, and 151 in Table 9. On the other hand, when the amount of Fe is small (Fe<67.4 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 130, 136, 145, and 152 in Table 9.
[0170] In the Mg.sub.2-W-type ferrite, when Fe=84.5 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 18 in Table 1. On the other hand, when the amount of Fe is large (Fe>84.5 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 19 in Table 1.
[0171] In the Mn.sub.2-W-type ferrite, when Fe=67.4 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from Nos. 160, 166, 175, and 182 in Table 10. On the other hand, when the amount of Fe is small (Fe<67.4 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 161, 167, 176, and 183 in Table 10.
[0172] In the Mn.sub.2-W-type ferrite, when Fe=84.5 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 36 in Table 2. On the other hand, when the amount of Fe is large (Fe>84.5 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 37 in Table 2.
[0173] In the Ni.sub.2-W-type ferrite, when Fe=67.4 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from Nos. 191, 197, 206, and 213 in Table 11. On the other hand, when the amount of Fe is small (Fe<67.4 mol %), the magnetic loss tan δ is 0.06 or more as seen from Nos. 192, 198, 207, and 214 in Table 11.
[0174] In the Ni.sub.2-W-type ferrite, when Fe=84.5 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 54 in Table 3. On the other hand, when the amount of Fe is large (Fe>84.5 mol %), the magnetic permeability μ′ at 6 GHz is 1.1 or less, and the magnetic loss tan δ is 0.06 or more, as seen from No. 55 in Table 3.
[0175] In the Zn.sub.2-W-type ferrite, when Fe=67.4 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from Nos. 222, 228, 237, and 244 in Table 12. On the other hand, when the amount of Fe is small (Fe<67.4 mol %), the magnetic loss tan δ is 0.06 or more as seen from Nos. 223, 229, 238, and 245 in Table 12.
[0176] In the Zn.sub.2-W-type ferrite, when Fe=84.5 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 72 in Table 4. On the other hand, when the amount of Fe is large (Fe>84.5 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 73 in Table 4.
Configuration 1-4: Selective Essential Element
[0177] In order to constitute the W-type hexagonal ferrite (structural formula A.sup.2+Me.sub.2.sup.2+Fe.sub.16O.sub.27), the Me (II) element is required.
[0178] Me (II) is 9.4 mol % to 18.1 mol % when definition is as follows: Me (II)=Co+Cu+Mg+Mn+Ni+Zn.
[0179] When the amount of the Me (II) element is small (Me (II)<9.4 mol %), or when the amount of the Me (II) element is large (Me (II)>18.1 mol %), the magnetic loss at 6 GHz becomes as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Details are as follows.
[0180] In the case of Mg.sub.2-W-type ferrite, when Me (II) element=9.4 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from No. 18 in Table 1. On the other hand, when the amount of the Me (II) element is small (Me (II)<9.4 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 19 in Table 1.
[0181] In the case of Mg.sub.2-W-type ferrite, when the Me (II) element=18.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 129, 135, 144, and 151 in Table 9. On the other hand, when the amount of the Me (II) element is large (Me (II)>18.1 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 130, 136, 145, and 152 in Table 9.
[0182] In the case of Mn.sub.2-W-type ferrite, when the Me (II) element=9.4 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from No. 36 in Table 2. On the other hand, when the amount of the Me (II) element is small (Me (II)<9.4 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 37 in Table 2.
[0183] In the case of Mn.sub.2-W-type ferrite, when the Me (II) element=18.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 160, 166, 175, and 182 in Table 10. On the other hand, when the amount of the Me (II) element is large (Me (II)>18.1 mol %), the magnetic loss tan δ at 6 GHz is 0.06 as seen from Nos. 161, 167, 176, and 183 in Table 10.
[0184] In the case of Ni.sub.2-W-type ferrite, when Me (II) element=9.4 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from No. 54 in Table 3. On the other hand, when the amount of the Me (II) element is small (Me (II)<9.4 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 55 in Table 3.
[0185] In the case of Ni.sub.2-W-type ferrite, when Me (II) element=18.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 191, 197, 206, and 213 in Table 11. On the other hand, when the amount of the Me (II) element is large (Me (II)>18.1 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 192, 198, 207, and 214 in Table 11.
[0186] In the case of Zn.sub.2-W-type ferrite, when the Me (II) element=9.4 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from No. 72 in Table 4. On the other hand, when the amount of the Me (II) element is small (Me (II)<9.4 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 73 in Table 4.
[0187] In the case of Zn.sub.2-W-type ferrite, when Me (II) element=18.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 222, 228, 237, and 244 in Table 12. On the other hand, when the amount of the Me (II) element is large (Me (II)>18.1 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 223, 229, 238, and 245 in Table 12.
[0188] Further, Me.sub.h (II) is 7.8 mol % to 17.1 mol % when definition is as follows: Men (II)=Mg+Mn+Ni+Zn.
[0189] When at least one of Mg, Mn, Ni, and Zn is contained as the element of the Me site, the magnetic loss tan δ can be suppressed in a state where a high magnetic permeability μ′ is obtained in a high frequency range of, for example, 6 GHz. Thus, magnetic properties suitable for inductors and antennas can be obtained.
[0190] When the amount of Me.sub.h (II) element is small (Me.sub.h (II)<7.8 mol %), or when the amount of Me.sub.h (II) element is large (Me.sub.h (II)>17.1 mol %), the magnetic loss at 6 GHz becomes as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Details are as follows.
[0191] In the case of Ni.sub.2-W-type ferrite, when Me.sub.h (II)=7.8 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 49 in Table 3.
[0192] On the other hand, when the amount of the Me.sub.h (II) element is small (Me.sub.h (II)<7.8 mol %), the magnetic loss tan δ at 6 GHz becomes as large as 0.06 as seen from No. 50 in Table 3. The lower limit value of Me.sub.h (II) of the Mg.sub.2-W-type.Mn.sub.2-W-type.Zn.sub.2-W-type is 8.3 mol % as seen from No. 12 in Table 1, No. 31 in Table 2, and 67 in Table 4.
[0193] In the case of Mg.sub.2-W-type ferrite, when Me.sub.h (II)=17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 129, 135, 144, and 151 in Table 9. On the other hand, when the amount of the Me.sub.h (II) element is large (Me.sub.h (II)>17.1 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 130, 136, 145, and 152 in Table 9.
[0194] In the case of Mn.sub.2-W-type ferrite, when Me.sub.h (II)=17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 160, 166, 175, and 182 in Table 10. On the other hand, when the amount of the Me.sub.h (II) element is large (Me.sub.h (II)>17.1 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 161, 167, 176, and 183 in Table 10.
[0195] In the case of Ni.sub.2-W-type ferrite, when Me.sub.h (II)=17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 191, 197, 206, and 213 in Table 11. On the other hand, when the amount of the Me.sub.h (II) element is large (Me.sub.h (II)>17.1 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 192, 198, 207, and 214 in Table 11.
[0196] In the case of Zn.sub.2-W-type ferrite, when Me.sub.h (II)=17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 222, 228, 237, and 244 in Table 12. On the other hand, when the amount of the Me.sub.h (II) element is large (Me.sub.h (II)>17.1 mol %), the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 223, 229, 238, and 245 in Table 12.
[0197] The content of each element is Cu: 0 mol % to 1.6 mol %, Mg: 0 mol % to 17.1 mol %, Mn: 0 mol % to 17.1 mol %, Ni: 0 mol % to 17.1 mol %, Zn: 0 mol % to 17.1 mol %, and Co: 0 mol % to 2.6 mol %.
[0198] When the amount of Cu is large (Cu>1.6 mol %), the magnetic permeability μ′ at 6 GHz is 1.10 or less, and the magnetic loss tan δ at 6 GHz is 0.06 or more, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Details are as follows.
[0199] When Cu=1.6 mol %, the magnetic permeability μ′ at 6 GHz is as high as 1.10 or more, and the magnetic loss tan δ at 6 GHz is as low as 0.06 or less, as seen from No. 95 in Table 6 for Mg.sub.2-W-type ferrite, No. 99 in Table 6 for Mn.sub.2-W-type ferrite, No. 102 in Table 6 for Ni.sub.2-W-type ferrite, and No. 105 in Table 6 for Zn.sub.2-W-type ferrite.
[0200] When the amount of Cu is large (Cu>1.6 mol %), the magnetic permeability μ′ at 6 GHz is as low as 1.10 or less, and the magnetic loss tan δ at 6 GHz becomes as large as 0.06 or more, as seen from Nos. 96 and 97 in Table 6 for Mg.sub.2-W-type ferrite, No. 100 in Table 6 for Mn.sub.2-W-type ferrite, No. 103 in Table 6 for Ni.sub.2-W-type ferrite, and No. 106 in Table 6 for Zn.sub.2-W-type ferrite, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Thus, the upper limit of the amount of Cu is set to 1.6 mol %.
[0201] When Mg=17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 129 and 135 in Table 9. On the other hand, when Mg>17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 130 and 136 in Table 9. Thus, the upper limit of the amount of Mg is set to 17.1 mol %.
[0202] When Mn=17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 160 and 166 in Table 10. On the other hand, when Mn>17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 161 and 167 in Table 10. Thus, the upper limit of the amount of Mn is set to 17.1 mol %.
[0203] When Ni=17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 191 and 197 in Table 11. On the other hand, when Ni>17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 192 and 198 in Table 11. Thus, the upper limit of the amount of Ni is set to 17.1 mol %.
[0204] When Zn=17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 222 and 228 in Table 12. On the other hand, when Zn>17.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 223 and 229 in Table 12. Thus, the upper limit of the amount of Zn is set to 17.1 mol %.
[0205] When Co=2.6 mol %, the magnetic permeability μ′ at 6 GHz is as high as 1.10 or more, and the magnetic loss tan δ at 6 GHz is as low as 0.06 or less, as seen from No. 49 in Table 3. On the other hand, when Co>2.6 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 50 in Table 3.
[0206] When Co=0 mol %, the magnetic permeability μ′ at 6 GHz is as high as 1.10 or more, and the magnetic loss tan δ at 6 GHz is as low as 0.06 or less, as seen from No. 9 in Table 1, No. 28 in Table 2, No. 46 in Table 3, and No. 64 in Table 4. Thus, the range of Co is set to 0 mol % to 2.6 mol %.
Configuration 1-5: Co: 0.5 Mol % to 2.1 Mol %
[0207] As described above, the amount of Co may be 0 mol % to 2.6 mol %, but is desirably 0.5 mol % or more. Details are as follows.
[0208] In the case of Mg.sub.2-W ferrite, when the Co amount is 0 mol %, the magnetic permeability at 6 GHz is 1.63 as seen from No. 9 in Table 1. On the other hand, at Co>0.5 mol %, when substitution with the later-described M.sub.2d element is not performed, the maximum value of the magnetic permeability at 6 GHz can be increased to 2.00 as seen from No. 12 in Table 1.
[0209] In the case of Mn.sub.2-W-type ferrite, when the Co amount is 0 mol %, the magnetic permeability at 6 GHz is 1.20 as seen from No. 28 in Table 2. On the other hand, at Co≥0.5 mol %, when substitution with the later-described M.sub.2d element is not performed, the maximum value of the magnetic permeability at 6 GHz can be increased to 1.62 as seen from No. 30 in Table 2.
[0210] In the case of Ni.sub.2-W-type ferrite, when the Co amount is 0 mol %, the magnetic permeability at 6 GHz is 1.26 as seen from No. 46 in Table 3. On the other hand, at Co≥0.5 mol %, when substitution with the later-described M.sub.2d element is not performed, the maximum value of the magnetic permeability at 6 GHz can be increased to 1.71 as seen from No. 49 in Table 3.
[0211] In the case of Zn.sub.2-W-type ferrite, when the Co amount is 0 mol %, the magnetic permeability at 6 GHz is 1.27 as seen from No. 64 in Table 4. On the other hand, at Co≥0.5 mol %, when substitution with the later-described M.sub.2d element is not performed, the maximum value of the magnetic permeability at 6 GHz can be increased to 2.12 as seen from No. 67 in Table 4.
[0212] It is known that W-type hexagonal ferrite not containing Co (structural formula A.sup.2+Me.sub.2.sup.2+Fe.sub.16O.sub.27) exhibits hard magnetism suitable as a magnet material as shown in Patent Documents 1, 2, and 3 since it usually has c-axis anisotropy (the spin tends to be directed in the direction of the c-axis) due to the influence of the Fe ions on the five-coordinate sites (2d sites in
[0213] When Co<0.5 mol % and Co is not added, the magnetic permeability μ′ at 6 GHz is 1.63 for Mg.sub.2-W-type ferrite as seen from No. 9 in Table 1, 1.20 for Mn.sub.2-W-type ferrite as seen from No. 28 in Table 2, 1.26 for Ni.sub.2-W-type ferrite as seen from No. 46 in Table 3, and 1.27 for Zn.sub.2-W-type ferrite as seen from No. 64 in Table 4, and the upper limit is 1.63.
[0214] The amount of Co is desirably 2.1 mol % or less.
[0215] When Co>2.1 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more for Mg.sub.2-W-type ferrite as seen from No. 13 in Table 1, for Mn.sub.2-W-type ferrite as seen from No. 32 in Table 2, and for Zn.sub.2-W-type ferrite as seen from No. 68 in Table 4, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0216] Only for the Ni.sub.2-W-type ferrite, when Co=2.6 mol %, the magnetic loss tan δ is 0.06 or less as seen from No. 49 in Table 3. However, when Co>2.6 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 50 in Table 3, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
Configuration 1-6: Balance Between Multiple Elements (D: 7.8 Mol % to 11.6 Mol % when Definitions are as Follows: Me (I)=Na+K+Li, Me (II)=Co+Cu+Mg+Mn+Ni+Zn, Me (IV)=Ge+Si+Sn+Ti+Zr+Hf, Me (V)=Mo+Nb+Ta+Sb+W+V, and D=Me (I)+Me (II)−Me (IV)−2×Me (V))
[0217] Me (I) is defined as an element that tends to be a monovalent cation, Me (II) is defined as an element that tends to be a divalent cation, Me (IV) is defined as an element that tends to be a tetravalent cation, and Me (V) is defined as an element that tends to be a pentavalent or more cation. However, since it is difficult to measure the amount of the electric charge of polycrystalline which is an insulator, that the charge balance is achieved is assumed from the fact that the specific resistance is high.
[0218] When the charge balance amount D is large (D>11.6 mol %), or when the charge balance amount D is small (D<7.8 mol %), the magnetic loss at 6 GHz becomes as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Details are as follows.
[0219] When the charge balance amount D=11.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 16 in Table 1, No. 34 in Table 2, No. 52 in Table 3, No. 70 in Table 4, No. 307, No. 312, No. 317, and No. 322 in Table 17. On the other hand, when the charge balance amount D is large (D>11.6 mol %), the magnetic loss tan δ is 0.06 or more as seen from No. 15 in Table 1, No. 33 in Table 2, No. 51 in Table 3, No. 69 in Table 4, and No. 306, No. 311, No. 316, and No. 321 in Table 17.
[0220] When the charge balance amount D=7.8 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 338 in Table 19. On the other hand, when the charge balance amount D is small (D<7.8 mol %), the magnetic loss tan δ is 0.06 or more as seen from No. 339 in Table 19.
Configuration 1-7: M.SUB.2d.=In+Sc+Sn+Zr+Hf: 0 Mol % to 7.8 Mol %
[0221] In, Sc, Sn, Zr, and Hf are nonmagnetic elements having the function of replacing Fe on the five-coordinate sites in the hexagonal ferrite. Fe on the five-coordinate site has an effect of hard magnetism in which the spin is easily directed in the direction of the c-axis of the hexagonal ferrite. When substitution with at least one of In, Sc, Sn, Zr, and Hf, which are nonmagnetic elements, is performed on the five-coordinate sites of the hexagonal ferrite, the saturation magnetization decreases, but as a result of weakening the effect of hard magnetism exhibited by Fe on the five-coordinate sites, the coercivity rapidly decreases. As a result, the magnetic permeability μ′ at 6 GHz can be increased to a maximum of 3.15 at M.sub.2d>1.0 mol % with respect to a maximum of 2.12 at M.sub.2d=0 mol. Thus, the M.sub.2d amount is desirably 1.0 mol % or more. Each element of M.sub.2d (Sn.Zr+Hf.In.Sc) for each of the W-type ferrite material systems (Mg.sub.2-W-type ferrite.Mn.sub.2-W-type ferrite.Ni.sub.2-W-type ferrite.Zn.sub.2-W-type ferrite) will be described below separately.
[0222] In the case of Mg.sub.2-W-type ferrite, when substitution with the M.sub.2d element is not performed, the maximum value of the magnetic permeability μ′ at 6 GHz is μ′=2.00 as seen from No. 12 in Table 1.
[0223] In Mg.sub.2-W-type ferrite, when substitution with an In element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.51 as seen from No. 253 in Table 13.
[0224] In Mg.sub.2-W-type ferrite, when substitution with a Sc element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.49 as seen from No. 258 in Table 13.
[0225] In Mg.sub.2-W-type ferrite, when substitution with a Sn element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=3.15 as seen from No. 143 in Table 9.
[0226] In Mg.sub.2-W-type ferrite, when substitution with Zr+Hf elements is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=3.15 as seen from No. 150 in Table 9.
[0227] In the case of Mn.sub.2-W-type ferrite, when substitution with the M.sub.2d element is not performed, the maximum value of the magnetic permeability μ′ at 6 GHz is μ′=1.62 as seen from No. 30 in Table 2.
[0228] In the Mn.sub.2-W-type ferrite, when substitution with an In element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.45 as seen from No. 268 in Table 14.
[0229] In the Mn.sub.2-W-type ferrite, substitution with a Sc element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.51 as seen from No. 273 in Table 14.
[0230] In the Mn.sub.2-W-type ferrite, when substitution with a Sn element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=3.15 as seen from No. 174 in Table 10.
[0231] In the Mn.sub.2-W-type ferrite, when substitution with Zr+Hf elements is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=3.15 as seen from No. 181 in Table 10.
[0232] In the case of Ni.sub.2-W-type ferrite, when substitution with the M.sub.2d element is not performed, the maximum value of the magnetic permeability μ′ at 6 GHz is μ′=1.71 as seen from No. 49 in Table 3.
[0233] In the Ni.sub.2-W-type ferrite, when substitution with an In element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.26 as seen from No. 283 in Table 15.
[0234] In the Ni.sub.2-W-type ferrite, substitution with a Sc element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.27 as seen from No. 288 in Table 15.
[0235] In the Ni.sub.2-W-type ferrite, when substitution with a Sn element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.68 as seen from No. 205 in Table 11.
[0236] In the Ni.sub.2-W-type ferrite, when substitution with Zr+Hf elements is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.56 as seen from No. 212 in Table 11.
[0237] In the case of Zn.sub.2-W-type ferrite, when substitution with the M.sub.2d element is not performed, the maximum value of the magnetic permeability μ′ at 6 GHz is μ′=2.12 as seen from No. 67 in Table 4.
[0238] In the Zn.sub.2-W-type ferrite, when substitution with an In element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.49 as seen from No. 298 in Table 16.
[0239] In the Zn.sub.2-W-type ferrite, when substitution with a Sc element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.50 as seen from No. 303 in Table 16.
[0240] In the Zn.sub.2-W-type ferrite, when substitution with a Sn element is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.97 as seen from No. 236 in Table 12.
[0241] In the Zn.sub.2-W-type ferrite, when substitution with Zr+Hf elements is performed, the maximum value of the magnetic permeability μ′ at 6 GHz is as high as μ′=2.79 as seen from No. 243 in Table 12.
[0242] However, since the cations on the five-coordinate sites are 5.3 mol % in the crystal structure (AMe.sub.2Fe.sub.16O.sub.27) of the W-type ferrite, substitution with the nonmagnetic ions also occurs on the six-coordinate Fe sites when the nonmagnetic ions are excessively added. When substitution with the nonmagnetic ions also occurs on the six-coordinate Fe sites, the effect of the ferromagnetic Fe is weakened, and as a result, the saturation magnetization decreases, and the magnetic loss increases. As a result, at M.sub.2d>7.8 mol %, the magnetic loss at 6 GHz becomes as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Each element of Mai (Sn.Zr+Hf.In.Sc) will be described separately in Configuration 1-8 and Configuration 1-9.
Configuration 1-8: Sn: 0 Mol % to 7.8 Mol %, Zr+Hf: 0 Mol % to 7.8 Mol %
[0243] Sn, Zr, and Hf have an effect of increasing the magnetic permeability by substitution on the five-coordinate sites of Fe. However, since all of them have a property of easily becoming a tetravalent cation, it is necessary to correct the charge balance amount D by adding an element of M (II) that tends to be a divalent cation or an element of M (I) that tends to be a monovalent cation.
[0244] Note that Zr and Hf are elements produced from the same ore, have the same effect, and are denoted as Zr+Hf because the cost increases if they are separated and purified.
[0245] When Sn>7.8 mol % or Zr+Hf>7.8 mol %, the magnetic loss at 6 GHz becomes as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Details are as follows.
[0246] When Sn=7.8 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 129 and 144 in Table 9 for the Mg.sub.2-W-type ferrite, Nos. 160 and 175 in Table 10 for the Mn.sub.2-W-type ferrite, Nos. 191 and 206 in Table 11 for the Ni.sub.2-W-type ferrite, and Nos. 222 and 237 in Table 12 for the Zn.sub.2-W-type ferrite.
[0247] When Sn>7.8 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 130 and 145 in Table 9 for the Mg.sub.2-W-type ferrite, Nos. 161 and 176 in Table 10 for the Mn.sub.2-W-type ferrite, Nos. 192 and 207 in Table 11 for the Ni.sub.2-W-type ferrite, and Nos. 223 and 238 in Table 12 for the Zn.sub.2-W-type ferrite, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0248] When Zr+Hf=7.8 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from Nos. 135 and 151 in Table 9 for the Mg.sub.2-W-type ferrite, Nos. 166 and 182 in Table 10 for the Mn.sub.2-W-type ferrite, Nos. 197 and 213 in Table 11 for the Ni.sub.2-W-type ferrite, and Nos. 228 and 244 in Table 12 for the Zn.sub.2-W-type ferrite.
[0249] When Zr+Hf>7.8 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 136 and 152 in Table 9 for the Mg.sub.2-W-type ferrite, Nos. 167 and 183 in Table 10 for the Mn.sub.2-W-type ferrite, Nos. 198 and 214 in Table 11 for the Ni.sub.2-W-type ferrite, and Nos. 229 and 245 in Table 12 for the Zn.sub.2-W-type ferrite, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
Configuration 1-9: In: 0 Mol % to 7.8 Mol %, Sc: 0 Mol % to 7.8 Mol %
[0250] When partial substitution with In or Sc is performed, the substitution occurs on the five-coordinate sites of Fe and provides an effect to increase the magnetic permeability. Since both of them have a property of easily becoming trivalent cations, the charge balance is not lost also in a case where trivalent Fe is substituted with In or Sc, and it is not necessary to correct the charge balance amount D.
[0251] When In >7.8 mol % or Sc>7.8 mol %, the magnetic loss at 6 GHz becomes as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Details are as follows.
[0252] When In=7.8 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from No. 254 in Table 13 for the Mg.sub.2-W-type ferrite, No. 269 in Table 14 for the Mn.sub.2-W-type ferrite, No. 284 in Table 15 for the Ni.sub.2-W-type ferrite, and No. 299 in Table 16 for the Zn.sub.2-W-type ferrite.
[0253] When In>7.8 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 255 in Table 13 for the Mg.sub.2-W-type ferrite, No. 270 in Table 14 for the Mn.sub.2-W-type ferrite, No. 285 in Table 15 for the Ni.sub.2-W-type ferrite, and No. 300 in Table 16 for the Zn.sub.2-W-type ferrite, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0254] When Sc=7.8 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or less as seen from No. 259 in Table 13 for the Mg.sub.2-W-type ferrite, No. 274 in Table 14 for the Mn.sub.2-W-type ferrite, No. 289 in Table 15 for the Ni.sub.2-W-type ferrite, and No. 304 in Table 16 for the Zn.sub.2-W-type ferrite.
[0255] When Sc>7.8 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 260 in Table 13 for Mg.sub.2-W-type ferrite, No. 275 in Table 14 for Mn.sub.2-W-type ferrite, No. 290 in Table 15 for Ni.sub.2-W-type ferrite, and No. 305 in Table 16 for Zn.sub.2-W-type ferrite, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
Configuration 1-10: Ge: 0 Mol % to 2.6 Mol %, Si: 0 Mol % to 2.6 Mol %, and Ti: 0 Mol % to 2.6 Mol %
[0256] It is necessary to correct the charge balance amount D by adding an element of M (II) that tends to be a divalent cation or an element of M (I) that tends to be a monovalent cation when partial substitution with Ge, Si, or Ti, which tends to be a tetravalent cation, is performed.
[0257] When Ge>2.6 mol %, Si>2.6 mol %, or Ti>2.6 mol %, the magnetic loss at 6 GHz becomes as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Details are as follows.
[0258] When Ge=2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or more, and the magnetic loss tan δ is 0.06 or less, as seen from Nos. 123 and 137 in Table 9, Nos. 154 and 168 in Table 10, Nos. 185 and 199 in Table 11, and Nos. 216 and 230 in Table 12. However, when Ge>2.6 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 124 and 138 in Table 9, Nos. 155 and 169 in Table 10, Nos. 186 and 200 in Table 11, and Nos. 217 and 231 in Table 12, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0259] When Si=2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or more, and the magnetic loss tan δ is 0.06 or less, as seen from Nos. 125 and 139 in Table 9, Nos. 156 and 170 in Table 10, Nos. 187 and 201 in Table 11, and Nos. 218 and 232 in Table 12. However, when Si>2.6 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 126 and 140 in Table 9, Nos. 157 and 171 in Table 10, Nos. 188 and 202 in Table 11, and Nos. 219 and 233 in Table 12, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0260] When Ti=2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or more, and the magnetic loss tan δ is 0.06 or less, as seen from Nos. 131 and 146 in Table 9, Nos. 162 and 177 in Table 10, Nos. 193 and 208 in Table 11, and Nos. 224 and 239 in Table 12. However, when Ti>2.6 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from Nos. 132 and 147 in Table 9, Nos. 163 and 178 in Table 10, Nos. 194 and 209 in Table 11, and Nos. 225 and 240 in Table 12, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
Configuration 1-11: Al: 0 Mol % to 2.6 Mol %, Ga: 0 Mol % to 2.6 Mol %
[0261] When partial substitution with Al or Ga is performed, the substitution occurs on the six-coordinate sites of Fe, whereby the saturation magnetization decreases and the coercivity increases.
[0262] When Al>2.6 mol % or Ga>2.6 mol %, the magnetic permeability μ′ at 6 GHz drops to μ′<1.10, and the magnetic loss at 6 GHz becomes as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Details are as follows.
[0263] When Al=2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 247 in Table 13, No. 262 in Table 14, No. 277 in Table 15, and No. 292 in Table 16. However, when Al>2.6 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 248 in Table 13, No. 263 in Table 14, No. 278 in Table 15, and No. 293 in Table 16, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0264] When Ga=2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 249 in Table 13, No. 264 in Table 14, No. 279 in Table 15, and No. 294 in Table 16. However, when Ga>2.6 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 250 in Table 13, No. 265 in Table 14, No. 280 in Table 15, and No. 295 in Table 16, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
Configuration 1-12: Mo: 0 Mol % to 2.6 Mol %, Nb+Ta: 0 Mol % to 2.6 Mol %, Sb: 0 mol % to 2.6 mol %, W: 0 mol % to 2.6 mol %, V: 0 mol % to 2.6 mol %
[0265] When partial substitution with Mo, Nb, Ta, Sb, W, or V is performed, they have a property of easily becoming a pentavalent or hexavalent cation, and thus the charge balance amount D needs to be corrected by adding an element of M (II) that tends to be a divalent cation or an element of M (I) that tends to be a monovalent cation.
[0266] When Mo>2.6 mol %, Nb+Ta>2.6 mol %, Sb>2.6 mol %, W>2.6 mol %, or V>2.6 mol %, the magnetic permeability μ′ at 6 GHz drops to μ′<1.10, and the magnetic loss at 6 GHz becomes as large as tan δ>0.06, and thus magnetic properties difficult to use in an inductor or the like are exhibited. Details are as follows.
[0267] When Mo=2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 327 in Table 18. However, when Mo>2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or less, and the magnetic loss tan δ is 0.06 or more, as seen from No. 328 in Table 18, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0268] When Nb+Ta=2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 329 in Table 18. However, when Nb+Ta>2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or less, and the magnetic loss tan δ is 0.06 or more, as seen from No. 330 in Table 18, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0269] When Sb=2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 331 in Table 18. However, when Sb>2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or less, and the magnetic loss tan δ is 0.06 or more, as seen from No. 332 in Table 18, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0270] When W=2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 333 in Table 18. However, when W>2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or less, and the magnetic loss tan δ is 0.06 or more, as seen from No. 334 in Table 18, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0271] When V=2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 335 in Table 18. However, when V>2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.10 or less, and the magnetic loss tan δ is 0.06 or more, as seen from No. 336 in Table 18, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
Configuration 1-13: Li: 0 mol % to 2.6 mol %
[0272] When the amount of Li added=2.6 mol %, the magnetic permeability μ′ at 6 GHz is 1.1 or more, and the magnetic loss tan δ is 0.06 or less, as seen from No. 338 in Table 19. However, when the amount of Li added is >2.6 mol %, the magnetic loss tan δ at 6 GHz is 0.06 or more as seen from No. 339 in Table 19, and thus magnetic properties difficult to use in an inductor or the like are exhibited.
[0273] In the soft magnetic composition of the present invention, the coercivity Hcj is 100 kA/m or less.
[0274] By reducing the coercivity, the composition exhibits soft magnetic properties and the magnetic permeability μ′ at 6 GHz can be increase to 1.10 or more.
[0275] When the coercivity is low, in the case of a ferrite material, the residual magnetic field is reduced due to a low-temperature demagnetization phenomenon and thus it is difficult to practically use the ferrite material as a permanent magnet. On the other hand, in an inductor or an antenna, since the magnetic permeability is increased by utilizing magnetic force generated from a conductive wire having a coil shape or the like, which is the mechanism that a residual magnetic field is unnecessary, the ferrite material can be used.
[0276]
[0277] The soft magnetic composition of the present invention may exclude at least one soft magnetic composition among soft magnetic compositions which are oxides containing a W-type hexagonal ferrite as a main phase and having the following metal element ratio, and have the following coercivity Hcj.
[0278] Ba: 5.18 mol %, Ca: 1.55 mol %, Co: 2.59 mol %, Zn: 7.77 mol %, Fe: 82.90 mol %, Hcj: 36.4 kA/m.
[0279] Ba: 5.18 mol %, Ca: 1.55 mol %, Co: 1.04 mol %, Zn: 9.33 mol %, In: 5.18 mol %, Fe: 77.72 mol %, Hcj: 80.0 kA/m.
[0280] Ba: 5.18 mol %, Ca: 1.55 mol %, Co: 1.04 mol %, Zn: 9.33 mol %, Sc: 5.18 mol %, Fe: 77.72 mol %, Hcj: 78.8 kA/m.
[0281] Ba: 5.18 mol %, Ca: 1.55 mol %, Co: 1.04 mol %, Ni: 5.18 mol %, Zn: 9.33 mol %, Sn: 5.18 mol %, Fe: 72.54 mol %, Hcj: 77.6 kA/m.
[0282] Ba: 5.18 mol %, Ca: 1.55 mol %, Co: 1.04 mol %, Ni: 5.18 mol %, Zn: 9.33 mol %, Zr+Hf: 5.18 mol %, Fe: 72.54 mol %, Hcj: 75.8 kA/m.
[0283] In the soft magnetic composition of the present invention, the saturation magnetization Is is desirably 200 mT or more.
[0284] It is generally known that increasing saturation magnetization Is of a material to increase saturation magnetic flux density Bs is effective for increasing DC superposition property. Patent Document 1 describes that in hexagonal ferrite, the W-type has higher saturation magnetization than the M-type and the Z-type. Due to the trends toward low voltage and high current in integrated circuits (ICs), the current value tends to increase not only in power supply circuits but also in communication circuits and the like, and thus a material having low saturation magnetization has the problem of deteriorating DC superposition property.
[0285] In the soft magnetic composition of the present invention, the specific resistance ρ is desirably 10.sup.6 Ω.Math.m or more.
[0286] When the specific resistance is low, since the eddy current loss increases at low frequencies, the magnetic loss increases and the dielectric constant also increases. When the specific resistance is as high as ρ≥10.sup.6 [Ω.Math.m], the eddy current loss decreases also in the GHz band, and the magnetic loss can be reduced.
[0287] In the soft magnetic composition of the present invention, the magnetic permeability μ′ at 6 GHz is desirably 1.10 or more, and more desirably 2 or more.
[0288] In a case where the magnetic permeability is as high as μ′≥1.1, the inductance of the coil can be made higher than that of an air-core coil when both coils are processed so as to have the same number of turns. When the magnetic permeability is as high as μ′≥2.0, an inductance equal to or higher than that of the air-core coil can be obtained also in a case where the number of turns of the coil is reduced as shown in
[0289] The air-core coil is a coil using only a nonmagnetic body such as glass or resin as a winding core material.
[0290] In the soft magnetic composition of the present invention, the magnetic loss tan δ at 6 GHz is desirably 0.06 or less.
[0291] Since the reduction of the magnetic loss tan δ can reduce the magnetic loss, it is possible to suppress a decrease in Q of the coil due to insertion of a magnetic body core. By using a magnetic body, when a coil is formed, Q of the coil can be increased in a high frequency range as shown in
[0292] In the soft magnetic composition of the present invention, the dielectric constant c is desirably 30 or less.
[0293] In a case where the stray capacitance between the windings of the coil is large, if the LC resonant frequency decreases to several GHz or less in the coil component, it does not function as an inductor no matter how high Q of the magnetic material is. Thus, in order to use as a GHz band inductor, it is desirable to suppress the dielectric constant of the magnetic material to ε≤30. However, as shown in
[0294] The soft magnetic composition of the present invention is in a powder state. For industrial utilization of such a soft magnetic composition, it is necessary to make it in a liquid or solid state. For example, in order to be used as a winding inductor, a sintered body is preferably formed. For use as a multilayer inductor, a sintered body may be acceptable, but it is effective to mix the composition with a nonmagnetic body such as glass or resin for achieving higher frequency by reducing the dielectric constant to decrease the stray capacitance. For use as a magnetic fluid, a paste form is desirable.
[0295] Such a sintered body obtained by firing the soft magnetic composition of the present invention, or a composite body or paste obtained by mixing the soft magnetic composition of the present invention and a nonmagnetic body composed of at least one of glass and a resin is also encompassed by the present invention. The sintered body, the composite body, or the paste of the present invention may contain a ferromagnetic body, another soft magnetic body, or the like.
[0296] The sintered body means fine ceramics defined in JIS R 1600. The composite body means a material in which two or more materials having different properties are integrated or combined by firmly bonding at an interface while maintaining the respective phases. The paste is a dispersion system in which a soft magnetic powder is suspended, and means a substance having fluidity and high viscosity.
[0297] In addition, the nonmagnetic body means a substance that is not a ferromagnetic body and has a saturation magnetization of 1 mT or less.
[0298] Furthermore, a coil component formed by using the sintered body, the composite body, or the paste of the present invention is also encompassed by the present invention. The coil component of the present invention can also be used as a noise filter utilizing LC resonance by combining it with a capacitor.
[0299] The coil component means an electronic component using a coil described in JIS C 5602.
[0300] A coil component of the present invention includes a core portion and a winding portion provided around the core portion, the core portion is formed by using the sintered body, the composite body, or the paste of the present invention, and the winding portion always contains an electric conductor such as silver or copper.
[0301] Note that the winding means a wire that connects a portion of the periphery or the inside of a substance having spontaneous magnetization with an electric conductor. The electric conductor means a structure which is composed of a material having an electrical conductivity σ of 10.sup.5 S/m to in which both ends of the windings are electrically connected.
[0302] An antenna formed by using the sintered body, the composite body, or the paste of the present invention is also encompassed by the present invention.
EXAMPLE
[0303] Hereinafter, examples more specifically disclosing the present invention will be described. Note that the present invention is not limited only to these examples.
Example 1
[0304] In the W-type ferrite (crystal structure: see
[0305]
[0306] In the case of Me=Co, Mg, Mn, Ni, or Zn, peaks of a W-type hexagonal ferrite crystal structure (structural formula=BaMe.sub.2Fe.sub.16O.sub.27) were observed. However, in the case of Me=Cu, no peak of the W-type hexagonal ferrite crystal structure was observed, and peaks of the crystal structures of M-type hexagonal ferrite (structural formula=BaFe.sub.12O.sub.19) and spinel ferrite (structural formula=CuFe.sub.2O.sub.4) were observed.
[0307]
[0308] When the amount of Ca was x=0.3, peaks of a W-type hexagonal ferrite crystal structure (structural formula=BaMn.sub.2Fe.sub.16O.sub.27) were mainly observed. When the amount of Ca is x=0 or 1.0, some peaks show the W-type hexagonal ferrite crystal structure, but different phases which are M-type hexagonal ferrite (structural formula=BaFe.sub.12O.sub.19) and Y-type hexagonal ferrite (structural formula=Ba.sub.2Mn.sub.2Fe.sub.12O.sub.22) remain. In particular, when the amount of Ca is x=0, the Y-type hexagonal ferrite phase is the main phase.
[0309] The calcined powder was coarsely pulverized by a dry pulverizer such that the secondary particles became fine particles of 50 μm or less. In a 500 cc pot made of polyester material, 80 g of the calcined powder in a form of fine particles, 60 to 100 g of pure water, 2 to 4 g of ammonium polycarboxylate as a dispersant, and 1000 g of 1 to 5 mmφ PSZ media were placed, and pulverized for 70 to 100 hours in a ball mill at a rotation speed of 100 to 200 rpm to obtain a slurry of finer particles. To the slurry of finer particles, 5 to 15 g of a vinyl acetate binder having a molecular weight of 5000 to 30000 was added, and the mixture was formed into a sheet by a doctor blade method using polyethylene terephthalate as a sheet material, at a gap between the blade and the sheet: 100 to 250 μm, a drying temperature: 50 to 70° C., and a sheet take-up speed: 5 to 50 cm/min. This sheet was die-cut into a 5.0 cm square pieces, from which the sheets of polyethylene terephthalate were peeled off. The resulting ferrite sheets were stacked such that the total sheet thickness was 0.3 to 2.0 mm and placed in a mold of a stainless steel material, and pressure-bonded from above and below at a pressure of 150 to 300 MPa in a state of being heated to 50 to 80° C. to obtain a pressure-bonded body. In a state of being warmed to 60 to 80° C., the pressure-bonded body was die-cut into thin plate shapes so as to have a size of 18 mm×5 mm×0.3 mm thick or 10 mm×2 mm×0.2 mm thick after sintering to obtain workpieces for measurement of magnetic permeability, and the press-bonded body was die-cut into 10 mmφ disks to obtain workpieces for measurement of specific resistance, density, and magnetization curve.
[0310] The disk-shaped and thin-plate-shaped workpieces were placed on a zirconia setter, and heated in the atmosphere at a temperature ramp rate of 0.1 to 0.5° C./min and a maximum temperature of 400° C. for a maximum temperature holding time of 1 to 2 hours to thermally decompose and remove the binder and the like, and then firing was performed in the atmosphere at a firing temperature selected from 900 to 1400° C. at which the magnetic loss component μ″ at 6 GHz is minimized at a temperature ramp rate of 1 to 5° C./min for a maximum temperature holding time of 1 to 10 hours (oxygen concentration: about 21%) to obtain a sintered body.
[0311] The surface SEM images of the sintered body of the composition formula BaCa.sub.0.3Me.sub.1.8Co.sub.0.2Fe.sub.16O.sub.27 are shown in
[0312] As seen from
[0313] As seen from
[0314] For the measurement of the magnetic permeability, a short-circuited microstrip line jig for a rectangular sample (sample size: length 18.0 mm, width 5.0 mm, thickness ≤0.3 mm, model number ST-003C) manufactured by Keycom Corp. was used such that the magnetic permeability can be measured using a network analyzer manufactured by Keysight Technologies at a frequency of 1 to 10 GHz. A short circuit microstrip line jig for a thin film sample (sample size: length 10.0 mm, width 2.0 mm, thickness ≤0.2 mm, model number ST-005EG) manufactured by Keycom Corp. was used such that measurement of some samples can be performed at a frequency of 1 to 20 GHz.
[0315] The saturation magnetization (Is) and coercivity (Hcj=magnetic field at M=0 of MH curve) determined from the magnetization curve were measured at a maximum magnetic field of 10 kOe (796 kA/m) using a vibrating sample magnetometer (VSM). In order to calculate the saturation magnetization, the sintered density was separately measured by the Archimedes method according to HS R 1634. The saturation magnetization Is and the coercivity Hcj can be easily calculated because demagnetizing field correction based on the shape of the sample is not necessary.
[0316] Electrodes were formed using an InGa alloy on both flat surface positions of a 10 mmφ disk and then the specific resistance was measured with an ohmmeter.
[0317] For the dielectric constant, a dielectric constant at 1 GHz was measured using an impedance analyzer manufactured by Keysight Technologies by inserting a 20 mmφ flat and smooth single plate into a 16453A fixture.
[0318] The composition, magnetic properties, and the like of the composition formula BaCa.sub.xMg.sub.yCo.sub.zFe.sub.2mO.sub.27-δ are shown in Table 1.
TABLE-US-00001 TABLE 1 Composition formula: BaCa.sub.xMg.sub.yCo.sub.zFe.sub.2mO.sub.27-δ Composition formula [mol] Composition ratio Composite composition Ca Mg Co Fe [mol %] amount [mol %] No. x y z m Ba Ca Mg Co Fe Me(II) Me(IV) D 1 * 0.00 1.80 0.20 8.00 5.3 0.0 9.5 1.1 84.2 10.5 0.0 10.5 2 * 0.02 1.80 0.20 8.00 5.3 0.1 9.5 1.1 84.1 10.5 0.0 10.5 3 0.03 1.80 0.20 8.00 5.3 0.2 9.5 1.1 84.1 10.5 0.0 10.5 4 0.10 1.80 0.20 8.00 5.2 0.5 9.4 1.0 83.8 10.5 0.0 10.5 5 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 6 0.50 1.80 0.20 8.00 5.1 2.6 9.2 1.0 82.1 10.3 0.0 10.3 7 1.00 1.80 0.20 8.00 5.0 5.0 9.0 1.0 80.0 10.0 0.0 10.0 8 * 1.20 1.80 0.20 8.00 5.0 5.9 8.9 1.0 79.2 9.9 0.0 9.9 9 0.30 2.00 0.00 8.00 5.2 1.6 10.4 0.0 82.9 10.4 0.0 10.4 10 0.30 1.90 0.10 8.00 5.2 1.6 9.8 0.5 82.9 10.4 0.0 10.4 11 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 12 0.30 1.60 0.40 8.00 5.2 1.6 8.3 2.1 82.9 10.4 0.0 10.4 13 * 0.30 1.50 0.50 8.00 5.2 1.6 7.8 2.6 82.9 10.4 0.0 10.4 14 * 0.30 0.00 2.00 8.00 5.2 1.6 0.0 10.4 82.9 10.4 0.0 10.4 15 * 0.30 1.80 0.20 6.50 6.1 1.8 11.0 1.2 79.8 12.3 0.0 12.3 16 0.30 1.80 0.20 7.00 5.8 1.7 10.4 1.2 80.9 11.6 0.0 11.6 17 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 18 0.30 1.80 0.20 9.00 4.7 1.4 8.5 0.9 84.5 9.4 0.0 9.4 19 * 0.30 1.80 0.20 9.50 4.5 1.3 8.1 0.9 85.2 9.0 0.0 9.0 Magnetization curve Magnetic permeability Saturation Specific Dielectric at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant tan δ Is Hcj ρ ε No. μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 1 1.08 0.035 0.032 258 180 2 × 10 10 2 1.20 0.094 0.078 271 50 1 × 10.sup.7 9 3 1.55 0.064 0.041 276 38 4 × 10.sup.7 10 4 1.78 0.061 0.034 301 31 2 × 10.sup.8 10 5 1.88 0.050 0.027 322 29 2 × 10.sup.8 10 6 1.78 0.068 0.038 318 27 9 × 10.sup.7 10 7 1.59 0.089 0.056 251 38 3 × 10.sup.6 18 8 1.18 0.129 0.109 218 58 8 × 10.sup.3 39 9 1.63 0.083 0.051 312 51 2 × 10
33 10 1.75 0.080 0.046 310 40 9 × 10.sup.8 25 11 1.88 0.050 0.027 322 29 2 × 10.sup.8 10 12 2.00 0.090 0.045 342 35 1 × 10.sup.8 10 13 1.35 0.500 0.370 351 70 2 × 10
9 14 2.23 0.613 0.275 281 25 2 × 10
9 15 1.49 0.100 0.067 315 119 1 × 10.sup.7 47 16 1.87 0.050 0.027 319 38 8 × 10.sup.7 21 17 1.88 0.050 0.027 322 29 2 × 10.sup.8 10 18 1.68 0.070 0.042 351 31 3 × 10.sup.8 21 19 1.21 0.300 0.248 383 101 2 × 10.sup.5 46
indicates data missing or illegible when filed
[0319] The composition, magnetic properties, and the like of the composition formula BaCa.sub.xMn.sub.yCo.sub.zFe.sub.2mO.sub.27-δ are shown in Table 2.
TABLE-US-00002 TABLE 2 Composition formula: BaCa.sub.xMn.sub.yCo.sub.zFe.sub.2mO.sub.27-δ Composition formula [mol] Composition ratio Composite composition Ca Mg Co Fe [mol %] amount [mol %] No. x y z m Ba Ca Mn Co Fe Me(II) Me(IV) D 20 * 0.00 1.80 0.20 8.00 5.3 0.0 9.5 1.1 84.2 10.5 0.0 10.5 21 * 0.02 1.80 0.20 8.00 5.3 0.1 9.5 1.1 84.1 10.5 0.0 10.5 22 0.03 1.80 0.20 8.00 5.3 0.2 9.5 1.1 84.1 10.5 0.0 10.5 23 0.10 1.80 0.20 8.00 5.2 0.5 9.4 1.0 83.8 10.5 0.0 10.5 24 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 25 0.50 1.80 0.20 8.00 5.1 2.6 9.2 1.0 82.1 10.3 0.0 10.3 26 1.00 1.80 0.20 8.00 5.0 5.0 9.0 1.0 80.0 10.0 0.0 10.0 27 * 1.20 1.80 0.20 8.00 5.0 5.9 8.9 1.0 79.2 9.9 0.0 9.9 28 0.30 2.00 0.00 8.00 5.2 1.6 10.4 0.0 82.9 10.4 0.0 10.4 29 0.30 1.90 0.10 8.00 5.2 1.6 9.8 0.5 82.9 10.4 0.0 10.4 30 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 31 0.30 1.60 0.40 8.00 5.2 1.6 8.3 2.1 82.9 10.4 0.0 10.4 32 * 0.30 1.50 0.50 8.00 5.2 1.6 7.8 2.6 82.9 10.4 0.0 10.4 33 * 0.30 1.80 0.20 6.50 6.1 1.8 11.0 1.2 79.8 12.3 0.0 12.3 34 0.30 1.80 0.20 7.00 5.8 1.7 10.4 1.2 80.9 11.6 0.0 11.6 35 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 36 0.30 1.80 0.20 9.00 4.7 1.4 8.5 0.9 84.5 9.4 0.0 9.4 37 * 0.30 1.80 0.20 9.50 4.5 1.3 8.1 0.9 85.2 9.0 0.0 9.0 Magnetization curve Magnetic permeability Saturation Specific Dielectric at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant tan δ Is Hcj ρ ε No. μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 20 1.09 0.035 0.032 278 180 2 × 10.sup.8 10 21 1.20 0.094 0.078 301 50 1 × 10.sup.7 9 22 1.25 0.064 0.051 315 38 4 × 10.sup.7 10 23 1.40 0.035 0.025 368 28 8 × 10.sup.7 10 24 1.62 0.006 0.004 401 25 2 × 10 10 25 1.53 0.011 0.007 385 27 9 × 10.sup.7 10 26 1.39 0.052 0.037 354 38 3 × 10.sup.8 18 27 1.19 0.117 0.098 257 57 8 × 10
39 28 1.20 0.001 0.001 370 44 2 × 10
33 29 1.41 0.003 0.002 389 30 1 × 10
25 30 1.62 0.006 0.004 401 25 2 × 10
10 31 1.21 0.067 0.055 410 18 1 × 10
10 32 0.61 1.835 2.986 411 15 2 × 10
9 33 1.15 0.100 0.087 400 119 1 × 10.sup.7 47 34 1.32 0.050 0.038 401 38 8 × 10.sup.7 21 35 1.62 0.006 0.004 401 25 2 × 10
10 36 1.48 0.070 0.047 412 31 3 × 10
21 37 1.21 0.300 0.248 425 101 2 × 10.sup.5 46
indicates data missing or illegible when filed
[0320] The composition, magnetic properties, and the like of the composition formula BaCa.sub.xNi.sub.yCo.sub.zFe.sub.2mO.sub.27-δ are shown in Table 3.
TABLE-US-00003 TABLE 3 Composition formula: BaCa.sub.xNi.sub.yCo.sub.zFe.sub.2mO.sub.27-δ Composition formula [mol] Composition ratio Composite composition Ca Mg Co Fe [mol %] amount [mol %] No. x y z m Ba Ca Ni Co Fe Me(II) Me(IV) D 38 * 0.00 1.80 0.20 8.00 5.3 0.0 9.5 1.1 84.2 10.5 0.0 10.5 39 * 0.02 1.80 0.20 8.00 5.3 0.1 9.5 1.1 84.1 10.5 0.0 10.5 40 0.03 1.80 0.20 8.00 5.3 0.2 9.5 1.1 84.1 10.5 0.0 10.5 41 0.10 1.80 0.20 8.00 5.2 0.5 9.4 1.0 83.8 10.5 0.0 10.5 42 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 43 0.50 1.80 0.20 8.00 5.1 2.6 9.2 1.0 82.1 10.3 0.0 10.3 44 1.00 1.80 0.20 8.00 5.0 5.0 9.0 1.0 80.0 10.0 0.0 10.0 45 * 1.20 1.80 0.20 8.00 5.0 5.9 8.9 1.0 79.2 9.9 0.0 9.9 46 0.30 2.00 0.00 8.00 5.2 1.6 10.4 0.0 82.9 10.4 0.0 10.4 47 0.30 1.90 0.10 8.00 5.2 1.6 9.8 0.5 82.9 10.4 0.0 10.4 48 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 49 0.30 1.50 0 50 8.00 5.2 1.6 7.8 2.6 82.9 10.4 0.0 10.4 50 * 0.30 1.30 0.70 8.00 5.2 1.6 6.7 3.6 82.9 10.4 0.0 10.4 51 * 0.30 1.80 0.20 6.50 6.1 1.8 11.0 1.2 79.8 12.3 0.0 12.3 52 0.30 1.80 0.20 7.00 5.8 1.7 10.4 1.2 80.9 11.6 0.0 11.6 53 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 54 0.30 1.80 0.20 9.00 4.7 1.4 8.5 0.9 84.5 9.4 0.0 9.4 55 * 0.30 1.80 0.20 9.50 4.5 1.3 8.1 0.9 85.2 9.0 0.0 9.0 Magnetization curve Magnetic permeability Saturation Specific Dielectric at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant tan δ Is Hcj ρ ε No. μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 38 1.10 0.178 0.162 256 180 2 × 10 10 39 1.20 0.092 0.077 271 110 1 × 10.sup.7 9 40 1.23 0.067 0.054 276 99 4 × 10.sup.7 10 41 1.33 0.055 0.041 280 95 8 × 10.sup.7 10 42 1.38 0.046 0.033 297 92 2 × 10
10 43 1.29 0.059 0.046 281 95 9 × 10.sup.7 10 44 1.18 0.064 0.054 201 97 3 × 10
18 45 1.09 0.112 0.103 198 150 8 × 10
39 46 1.26 0.033 0.026 232 110 2 × 10
33 47 1.33 0.039 0.029 265 98 1 × 10
25 48 1.38 0.046 0.033 297 92 2 × 10
10 49 1.71 0.040 0.023 315 55 1 × 10
10 50 1.95 0.516 0.265 278 111 2 × 10
9 51 1.09 0.100 0.092 272 119 1 × 10.sup.7 47 52 1.29 0.057 0.044 284 95 8 × 10.sup.7 19 53 1.38 0.046 0.033 297 92 2 × 10
10 54 1.28 0.069 0.054 303 94 3 × 10
20 55 1.09 0.305 0.280 312 101 2 × 10.sup.5 46
indicates data missing or illegible when filed
[0321] The composition, magnetic properties, and the like of the composition formula BaCa.sub.xZn.sub.yCo.sub.zFe.sub.2mO.sub.27-δ are shown in Table 4.
TABLE-US-00004 TABLE 4 Composition formula: BaCa Zn.sub.yCo.sub.zFe.sub.2mO.sub.27-
Composition formula [mol] Composition ratio Composite composition Ca Zn Co Fe [mol %] amount [mol %] No. x y z m Ba Ca Zn Co Fe Me(II) Me(IV) D 56 * 0.00 1.80 0.20 8.00 5.3 0.0 9.5 1.1 84.2 10.5 0.0 10.5 57 * 0.02 1.80 0.20 8.00 5.3 0.1 9.5 1.1 84.1 10.5 0.0 10.5 58 0.03 1.80 0.20 8.00 5.3 0.2 9.5 1.1 84.1 10.5 0.0 10.5 59 0.10 1.80 0.20 8.00 5.2 0.5 9.4 1.0 83.
10.5 0.0 10.5 60 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 61 0.50 1.80 0.20 8.00 5.1 2.6 9.2 1.0 82.1 10.3 0.0 10.3 62 1.00 1.80 0.20 8.00 5.0 5.0 9.0 1.0 80.0 10.0 0.0 10.0 63 * 1.20 1.80 0.20 8.00 5.0 5.9 8.9 1.0 79.2 9.9 0.0 9.9 64 0.30 2.00 0.00 8.00 5.2 1.6 10.4 0.0 82.9 10.4 0.0 10.4 65 0.30 1.90 0.10 8.00 5.2 1.6 9.8 0.5 82.9 10.4 0.0 10.4 66 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 67 0.30 1.60 0.40 8.00 5.2 1.6 8.3 2.1 82.9 10.4 0.0 10.4 68 * 0.30 1.50 0.50 8.00 5.2 1.6 7.8 2.6 82.9 10.4 0.0 10.4 69 * 0.30 1.80 0.20 6.50 6.1 1.8 11.0 1.2 79.8 12.3 0.0 12.3 70 0.30 1.80 0.20 7.00 5.8 1.7 10.4 1.2 80.9 11.6 0.0 11.6 71 0.30 1.80 0.20 8.00 5.2 1.6 9.3 1.0 82.9 10.4 0.0 10.4 72 0.30 1.80 0.20 9.00 4.7 1.4 8.5 0.9 84.5 9.4 0.0 9.4 73 * 0.30 1.80 0.20 9.50 4.5 1.3 8.1 0.9 85.2 9.0 0.0 9.0 Magnetization curve Magnetic permeability Saturation Specific Dielectric at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant tan δ Is Hcj ρ ε No. μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 56 1.08 0.235 0.218 359 181 2 × 10.sup.8 10 57 1.18 0.104 0.088 371 86 1 × 10.sup.7 9 58 1.21 0.064 0.053 377 71 4 × 10.sup.7 10 59 1.38 0.024 0.017 387 58 8 × 10.sup.7 10 60 1.45 0.013 0.009 404 41 2 × 10
10 61 1.39 0.022 0.016 389 45 9 × 10.sup.7 10 62 1.27 0.058 0.046 357 58 3 × 10.sup.8 18 63 1.08 0.112 0.104 263 101 8 × 10
39 64 1.27 0.012 0.010 383 69 2 × 10.sup.8 33 65 1.35 0.014 0.010 394 55 1 × 10
25 66 1.45 0.013 0.009 404 41 2 × 10
10 67 2.12 0.092 0.043 415 25 1 × 10
10 68 3.07 0.300 0.098 437 17 2 × 10
9 69 1.09 0.156 0.143 361 118 1 × 10.sup.7 47 70 1.34 0.047 0.035 401 45 8 × 10.sup.7 21 71 1.45 0.013 0.009 404 41 2 × 10
10 72 1.37 0.068 0.050 412 55 3 × 10
21 73 1.31 0.246 0.188 426 101 2 × 10
46
indicates data missing or illegible when filed
[0322] For example, Nos. 5, 11, and 17 in Table 1, Nos. 24, 30, and 35 in Table 2, Nos. 42, 48, and 53 in Table 3, or Nos. 60, 66, and 71 in Table 4 have the same composition and thus have the same properties. In Tables 1 to 4, those marked with * are comparative examples outside the scope of the present invention. The same applies to the following table.
[0323] As seen from Tables 1 to 4, by setting the Me site to Mg, Mn, Ni, Zn, or the like, the magnetic loss tan δ can be significantly reduced to 0.06 or less in a state where the magnetic permeability μ′ at 6 GHz is increased to 1.1 or more.
[0324] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.0.3Me.sub.2Fe.sub.16O.sub.27 (Me=Co, Mg, or Mn) are shown in
[0325] In
[0326] As seen from
[0327] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.0.3Me.sub.2Fe.sub.16O.sub.27 (Me=Co, Ni, or Zn) are shown in
[0328] In
[0329] As seen from
[0330] As shown in
[0331] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.xMn.sub.1.8Co.sub.0.2Fe.sub.16O.sub.27 (x=0 or 0.3) are shown in
[0332] In
[0333] As seen from
[0334] In addition, by partial substitution with Co, the magnetic permeability can be increased from 1.63 to 2.12 at the maximum.
[0335] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.0.3Mn.sub.2-xCo.sub.xFe.sub.16O.sub.27 (x=0, 0.2, or 0.5) are shown in
[0336] In
[0337] As seen from
[0338] As seen from
[0339] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.0.3Ni.sub.2-xCo.sub.xFe.sub.16O.sub.27 (x=0, 0.2, or 0.5) are shown in
[0340] In
[0341] As seen from
[0342] As seen from
[0343] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.0.3Zn.sub.2-xCo.sub.xFe.sub.16O.sub.27 (x=0, 0.2, or 0.5) are shown in
[0344] In
[0345] As seen from
[0346] As seen from
Example 2
[0347] The composition formula of each powder material was set to ACa.sub.0.3(Co.sub.0.2M.sub.ii1.8)(Fe.sub.2m-a-b-c-d-eLi.sub.aM.sub.iibM.sub.iiicM.sub.ivdM.sub.ve)O.sub.27-δ.
[0348] Oxides, hydroxides, or carbonates having metal ions of A, Ca, Co, Fe, M.sub.ii, M.sub.iii, M.sub.iv, and M.sub.v were blended at a predetermined ratio shown in Tables 5 to 21 such that the total amount of the materials was 120 g. Note that A is an element that does not enter the Fe site but enters the A site due to a large ionic radius, and A=Ba, Sr, Bi, Na, K, or La; M.sub.ii is a divalent metal ion, and M.sub.ii=Co, Cu, Mg, Mn, Ni, or Zn; M.sub.iii is a trivalent metal ion, and M.sub.iii=Al, Ga, In, or Sc; M.sub.iv is a tetravalent metal ion, and M.sub.iv=Hf, Si, Sn, Ti, or Zr; and M.sub.v is a pentavalent or higher metal ion, and M.sub.v=Mo, Nb, Ta, Sb, W, or V. A mixed and dried powder, a sized powder, and a calcined powder were synthesized in the same manner as in Example 1, and the calcined powder was pulverized, then a molded sheet was produced, and a sintered body was obtained. The measurement was performed in the same manner as in Example 1.
[0349] The composition, magnetic properties, and the like of the composition formulas (Ba.sub.1-xSr.sub.x)Ca.sub.0.3Me.sub.1.8Co.sub.0.2Fe.sub.16O.sub.27-δ and (Ba.sub.1-xBi.sub.x)Ca.sub.0.3Me.sub.1.8+xCo.sub.0.2Fe.sub.16-xO.sub.27-δ are shown in Table 5.
TABLE-US-00005 TABLE 5 Composition formulas: (Ba Sr
)C
Me
Co
Fe
O
and (Ba
Bi
Ca
M
Co
Fe
O
Composition formula [mol] Me element Composition ratio Composite composition Ba Bi Sr [mol] [mol %] amount [mol %] No.
x
Mg Mn Ni Zn Ba Bi Sr Ca Mg Mn Ni Zn Co Fe Ba
Sr 74 1.0 0.0 0.0 1.8 0.0 0.0 0.0 5.2 0.0 0.0 1.6
.3 0.0 0.0 0.0 1.0
2.9 5.2 75 0.
0.0 0.5 1.8 0.0 0.0 0.0 2.6 0.0 2.6 1.6
.3 0.0 0.0 0.0 1.0 82.9 5.2 7
0.0 0.0 1.0 1.8 0.0 0.0 0.0 0.0 0.0 5.2 1.
9.3 0.0 0.0 0.0 1.0 82.9 5.2 77 0.8 0.2 0.0 2.0 0.0 0.0 0.0 4.1 1.0 0.0 1.
10.4 0.0 0.0 0.0 1.0 81.9 4.1 78 * 0.5 0.5 0.0 2.3 0.0 0.0 0.0 2.6 2.6 0.0 1.6 11.9 0.0 0.0 0.0 1.0
0.3 2.
79 1.0 0.0 0.0 0.0 1.8 0.0 0.0 5.2 0.0 0.0 1.
0.0
.3 0.0 0.0 1.0 82.9 5.2 80 0.5 0.0 0.
0.0 1.8 0.0 0.0 2.6 0.0 2.6 1.
0.0 9.3 0.0 0.0 1.0 82.9 5.2 81 0.0 0.0 1.0 0.0 1.8 0.0 0.0 0.0 0.0 5.2 1.
0.0
.3 0.0 0.0 1.0 82.9 5.2 82 0.
0.2 0.0 0.0 2.0 0.0 0.0 4.1 1.0 0.0 1.
0.0 10.4 0.0 0.0 1.0
1.9 4.1 83 * 0.5 0.5 0.0 0.0 2.3 0.0 0.0 2.6 2.6 0.0 1.
0.0 11.3 0.0 0.0 1.0 80.3 2.6 84 1.0 0.0 0.0 0.0 0.0 1.8 0.0 5.2 0.0 0.0 1.6 0.0 0.0 9.3 0.0 1.0 82.9 5.2 85 0.
0.0 0.5 0.0 0.0 1.8 0.0 2.6 0.0 2.6 1.
0.0 0.0 9.3 0.0 1.0 82.9 5.2 86 0.0 0.0 1.0 0.0 0.0 1.8 0.0 0.0 0.0 5.2 1.
0.0 0.0
.3 0.0 1.0 82.9 5.2 87 0.8 0.2 0.0 0.0 0.0 2.0 0.0 4.1 1.0 0.0 1.
0.0 0.0 10.4 0.0 1.0 81.9 4.1 88 * 0.5 0.5 0.0 0.0 0.0 2.3 0.0 2.
2.6 0.0 1.
0.0 0.0 11.
0.0 1.0 80.3 2.
89 1.0 0.0 0.0 0.0 0.0 0.0 1.
5.2 0.0 0.0 1.
0.0 0.0 0.0 9.3 1.0 82.9 5.2 90 0.5 0.0 0.5 0.0 0.0 0.0 1.8 2.
0.0 2.6 1.
0.0 0.0 0.0 9.3 1.0 82.9 5.2 91 0.0 0.0 1.0 0.0 0.0 0.0 1.8 0.0 0.0
.2 1.
0.0 0.0 0.0 9.3 1.0 82.9 5.2 92 0.8 0.2 0.0 2.0 0.0 0.0 0.0 4.1 1.0 0.0 1.
10.4 0.0 0.0 0.0 1.0 81.9 4.1 93 * 0.
0.
0.0 2.3 0.0 0.0 0.0 2.6 2.6 0.0 1.
11.0 0.0 0.0 0.0 1.0 80.3 2.6 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant amaount [mol %] tan δ Is Hcj ρ ε No. Me(II) Me(IV) D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 74 10.4 0.0 10.4 1.8
0.050 0.027 322 2
2 × 10
10 75 10.4 0.0 10.4 1.
7 0.072 0.039 321 2
8 × 10
81 7
10.4 0.0 10.4 1.8
0.0
3 0.049 31
23 5 × 10
33 77 11.4 0.0 11.4 1.81 0.0
7 0.0
7 307 2
2 × 10
10 78 13.0 0.0 13.0 1.2
0.549 0.42
238 15
2 × 10
9 79 10.4 0.0 10.4 1.62 0.008 0.004 401 25 2 × 10
10 80 10.4 0.0 10.4 1.62 0.010 0.006 395 2
8 × 10
0 81 10.4 0.0 10.4 1.62 0.012 0.007 387 33 5 × 10
31 82 11.4 0.0 11.4 1.60 0.009 0.005 390 2
2 × 10
10 83 1
.
0.0 13.0 1.19 0.159 0.134 322 101 2 × 10
91 84 10.4 0.0 10.4 1.3
0.046 0.033 297
2 2 × 10
10 85 10.4 0.0 10.4 1.39 0.051 0.037 290 84 8 × 10
5 86 10.4 0.0 10.4 1.36 0.078 0.057 284 87 5 × 10
32 87 11.4 0.0 11.4 1.29 0.0
3 0.049 287 9
2 × 10
10 88 13.0 0.0 13.0 1.0
0.124 0.115 201 215 2 × 10
72 89 10.4 0.0 10.4 1.45 0.013 0.009 404 41 2 × 10
10 90 10.4 0.0 10.4 1.44 0.010 0.013 398 44
× 10
74 91 10.4 0.0 10.4 1.44 0.020 0.018 391 47 5 × 10
33 92 11.4 0.0 11.4 1.35 0.072 0.053 387 49 2 × 10
10 93 13.0 0.0 13.0 1.07 0.138 0.130 312 109 2 × 10
75
indicates data missing or illegible when filed
[0350] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Cu.sub.xMe.sub.1.8-xCo.sub.0.2Fe.sub.16O.sub.27-δ are shown in Table 6.
TABLE-US-00006 TABLE 6 Composition formula: BaCa Cu
Me
Co
Fe
O
Composition Me element [mol] [mol] Composition ratio Cu Mg Mn Ni Zn [mol %] No. x 1.8-x 1.8-x 1.8-x 1.8-x Ba Ca Cu Mg Mn Ni Z
Co Fe 94 0.00 1.80 0.00 0.00 0.00 5.2 1.6 0.0 9.3 0.0 0.0 0.0 1.0 82.9 95 0.30 1.50 0.00 0.00 0.00 5.2 1.6 1.6 7.8 0.0 0.0 0.0 1.0 82.9 96 * 0.50 1.30 0.00 0.00 0.00 5.2 1.6 2.6 6.7 0.0 0.0 0.0 1.0 82.9 97 * 1.80 0.00 0.00 0.00 0.00 5.2 1.6 9.3 0.0 0.0 0.0 0.0 1.0 82.9 98 0.00 0.00 1.80 0.00 0.00 5.2 1.6 0.0 0.0 6.3 0.0 0.0 1.0 82.9 99 0.30 0.00 1.50 0.00 0.00 5.2 1.6 1.6 0.0 7.8 0.0 0.0 1.0 82.9 100 * 0.50 0.00 1.30 0.00 0.00 5.2 1.6 2.6 0.0 6.7 0.0 0.0 1.0 82.9 101 0.00 0.00 0.00 1.80 0.00 5.2 1.6 0.0 0.0 0.0 9.3 0.0 1.0 82.9 102 0.30 0.00 0.00 1.50 0.00 5.2 1.6 1.
0.0 0.0 7.8 0.0 1.0 82.9 103 * 0.50 0.00 0.00 1.30 0.00 5.2 1.6 2.6 0.0 0.0
.7 0.0 1.0 82.9 104 0.00 0.00 0.00 0.00 1.80 5.2 1.6 0.0 0.0 0.0 0.0 9.3 1.0 82.9 105 0.30 0.00 0.00 0.00 1.
0 5.2 1.6 1.6 0.0 0.0 0.0 7.8 1.0 82.9 106 * 0.50 0.00 0.00 0.00 1.30 5.2 1.6 2.6 0.0 0.0 0.0
.7 1.0 82.9 Magnetic permeability at 6 GHz μ = Magnetization curve μ′ − iμ″ Saturation tan magne- Coer- Specific Dielectric Composite composition δ tization civity resistance constant amount [mol %] μ″/ Is Hcj ρ ε No. Me(II) Me(IV) D μ′ μ″ μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 94 10.4 0.0 10.4 1.88 0.050 0.027 322 29 2 × 10.sup.8 10 95 10.4 0.0 10.4 1.49 0.042 0.028 301 34 8 × 10.sup.7 15 96 10.4 0.0 10.4 1.09 0.109 0.100 252 115 5 × 10.sup.7 79 97 10.4 0.0 10.4 0.98 1.0
0 1.112 201 210 5 × 10.sup.4 151 98 10.4 0.0 10.4 1.62 0.006 0.004 401 25 2 × 10.sup.8 10 99 10.4 0.0 10.4 1.37 0.002 0.001 3
4 30 8 × 10.sup.7 15 100 10.4 0.0 10.4 1.08 0.128 0.119 301 121 5 × 10.sup.7 84 101 10.4 0.0 10.4 1.38 0.046 0.033 297 92 2 × 10
10 102 10.4 0.0 10.4 1.26 0.038 0.030 290 95 8 × 10.sup.7 15 103 10.4 0.0 10.4 1.05 0.214 0.204 251 251 5 × 10.sup.7 74 104 10.4 0.0 10.4 1.45 0.013 0.00
404 41 2 × 10
10 105 10.4 0.0 10.4 1.34 0.009 0.007 388 49 8 × 10.sup.7 15 106 10.4 0.0 10.4 1.06 0.099 0.093 312 315 5 × 10.sup.7 71
indicates data missing or illegible when filed
[0351] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Ni.sub.xMe.sub.1.8-xCo.sub.0.2Fe.sub.16O.sub.27-δ are shown in Table 7.
TABLE-US-00007 TABLE 7 Composition formula: BaCa.sub.0.3Ni Me.sub.1.2-xCo.sub.0.2Fe
O.sub.27-
Composition Me element formula [mol] [mol] Composition ratio Composite composition Ni Mg Mn Zn [mol %] amount [mol %] No. x 1.8-x 1.8-x 1.8-x Ba Ca Mg Mn Ni Zn Co Fe Me(II) Me(IV) 107 1.80 0.00 0.00 0.00 5.2 1.6 0.0 0.0 9.3 0.0 1.0 82.9 10.4 0.0 108 0.90 0.90 0.00 0.00 5.2 1.6 4.7 0.0 4.7 0.0 1.0 82.9 10.4 0.0 109 0.00 1.80 0.00 0.00 5.2 1.6 9.3 0.0 0.0 0.0 1.0 82.9 10.4 0.0 110 0.90 0.00 0.90 0.00 5.2 1.6 0.0 4.7 4.7 0.0 1.0 82.9 10.4 0.0 111 0.00 0.00 1.80 0.00 5.2 1.6 0.0 9.3 0.0 0.0 1.0 82.9 10.4 0.0 112 0.90 0.00 0.00 0.90 5.2 1.6 0.0 0.0 4.7 4.7 1.0 82.9 10.4 0.0 113 0.00 0.00 0.00 1.80 5.2 1.6 0.0 0.0 0.0 9.3 1.0 82.9 10.4 0.0 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant amount [mol %] tan δ Is Hcj ρ ε No. D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 107 10.4 1.38 0.046 0.033 297 92 2 × 10
10 108 10.4 1.51 0.058 0.038 309 55 8 × 10.sup.7 15 109 10.4 1.88 0.050 0.027 322 29 2 × 10
10 110 10.4 1.51 0.00
0.003 387 41 8 × 10.sup.7 15 111 10.4 1.62 0.006 0.004 401 25 2 × 10
10 112 10.4 1.43 0.031 0.022 3
8 78 8 × 10.sup.7 15 113 10.4 1.45 0.013 0.009 404 41 2 × 10
10
indicates data missing or illegible when filed
[0352] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Zn.sub.xMe.sub.1.8-xCo.sub.0.2Fe.sub.16O.sub.27-δ are shown in Table 8.
TABLE-US-00008 TABLE 8 Composition formula: BaCa.sub.0.3Zn.sub.xMe Co.sub.0.2Fe.sub.1
O.sub.27-δ Me element Composition[mol] [mol] Composition ratio Composite composition Ni Mg Mn Zn [mol %] amount [mol %] No. x 1.8-x 1.8-x 1.8-x Ba Ca Mg Mn Ni Zn Co Fe Me(II) Me(IV) 114 1.80 0.00 0.00 0.00 5.2 1.6 0.0 0.0 0.0 9.3 1.0 82.9 10.4 0.0 115 0.90 0.90 0.00 0.00 5.2 1.6 4.7 0.0 0.0 4.7 1.0 82.9 10.4 0.0 116 0.00 1.80 0.00 0.00 5.2 1.6 9.3 0.0 0.0 0.0 1.0 82.9 10.4 0.0 117 0.90 0.00 0.90 0.00 5.2 1.6 0.0 4.7 0.0 4.7 1.0 82.9 10.4 0.0 118 0.50 0.00 1.30 0.00 5.2 1.6 0.0 6.7 0.0 2.6 1.0 82.9 10.4 0.0 119 0 00 0.00 1.80 0.00 5.2 1.6 0.0 9.3 0.0 0.0 1.0 82.9 10.4 0.0 120 0.90 0.00 0.00 0.90 5.2 1.6 0.0 0.0 4.7 4.7 1.0 82.9 10.4 0.0 121 0.00 0.00 0.00 1.
0 5.2 1.6 0.0 0.0 9.3 0.0 1.0 82.9 10.4 0.0 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant amount [mol %] tan δ Is Hcj ρ ε No. D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 114 10.4 1.45 0.013 0.009 404 41 2 × 10
10 115 10.4 1.61 0.042 0.026 361 36 8 × 10.sup.7 16 116 10.4 1.88 0.050 0.027 322 29 2 × 10
10 117 10.4 1.51 0.023 0.015 428 4 8 × 10.sup.7 14 118 10.4 1.47 0.002 0.001 412 22 8 × 10.sup.7 15 119 10.4 1.62 0.006 0.004 401 2
2 × 10
10 120 10.4 1.41 0.029 0.021 346 67 8 × 10.sup.7 13 121 10.4 1.38 0.046 0.033 297 92 2 × 10
10
indicates data missing or illegible when filed
[0353] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Co.sub.0.2Mg.sub.1.8+xMe.sub.xFe.sub.16-2xO.sub.27-δ and the composition formula BaCa.sub.0.3Co.sub.0.2Mg.sub.1.8Zn.sub.xMe.sub.xFe.sub.16-2xO.sub.27-δ are shown in Table 9.
TABLE-US-00009 TABLE 9 Composition formula: BaC Co
Mg
Me
Fe
O
and composition formula: BaCa
Co
Mg
Zn
Fe
O
Composition formula [mol] Me (II) element Me (IV) element Composition ratio Fe Mg Z
Ge Si S
Ti Z
[mol %] No. 1
-2x 1.8
x x x x x x x B
C
Co Mg Ge Si Sn Ti Z
Z
122 16.00 1.80 0.00 0.00 0.00 0.00 0.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 0.0 0.0 0.0 0.0 123 15.00 2.30 0.00 0.50 0.00 0.00 0.00 0.00 5.2 1.
1.0 11.9 2.6 0.0 0.0 0.0 0.0 0.0 124 * 14.00 2.80 0.00 1.00 0.00 0.00 0.00 0.00 5.2 1.8 1.0 14.5 5.2 0.0 0.0 0.0 0.0 0.0 125 15.00 2.30 0.00 0.00 0.50 0.00 0.00 0.00 5.2 1.
1.0 11.9 0.0 2.
0.0 0.0 0.0 0.0 126 * 14.00 2.80 0.00 0.00 1.00 0.00 0.00 0.00 5.2 1.
1.0 14.5 0.0
.2 0.0 0.0 0.0 0.0 127 15.00 2.30 0.00 0.00 0.00 0.50 0.00 0.00 5.2 1.8 1.0 11.9 0.0 0.0 2.6 0.0 0.0 0.0 128 14.00 2.80 0.00 0.00 0.00 1.00 0.00 0.00 5.2 1.
1.0 14.5 0.0 0.0 5.2 0.0 0.0 0.0 129 13.00 3.30 0.00 0.00 0.00 1.50 0.00 0.00 5.2 1.
1.0 17.1 0.0 0.0 7.8 0.0 0.0 0.0 130 * 12.00 3.80 0.00 0.00 0.00 2.00 0.00 0.00 5.2 1.8 1.0 1
.7 0.0 0.0 10.4 0.0 0.0 0.0 131 15.00 2.30 0.00 0.00 0.00 0.00 0.50 0.00 5.2 1.8 1.0 11.9 0.0 0.0 0.0 2.6 0.0 0.0 132 * 14.00 2.80 0.00 0.00 0.00 0.00 1.00 0.00 5.2 1.
1.0 14.5 0.0 0.0 0.0 5.2 0.0 0.0 133 15.00 2.30 0.00 0.00 0.00 0.00 0.00 0.50 5.2 1.8 1.0 11.9 0.0 0.0 0.0 0.0 0.0 2.6 134 14.00 2.80 0.00 0.00 0.00 0.00 0.00 1.00 5.2 1.8 1.0 14.5 0.0 0.0 0.0 0.0 0.0 5.2 135 13.00 3.30 0.00 0.00 0.00 0.00 0.00 1.50 5.2 1.
1.0 17.1 0.0 0.0 0.0 0.0 0.0 7.8 136 * 12.00 3.80 0.00 0.00 0.00 0.00 0.00 2.00 5.2 1.
1.0 10.7 0.0 0.0 0.0 0.0 0.0 10.4 137 15.00 1.80 0.50 0.50 0.00 0.00 0.00 0.00 5.2 1.8 1.0 9.3 2.6 0.0 0.0 0.0 2.
0.0 138 * 14.00 1.80 1.00 1.00 0.00 0.00 0.00 0.00 5.2 1.
1.0 9.3 5.2 0.0 0.0 0.0 5.2 0.0 139 15.00 1.80 0.50 0.00 0.50 0.00 0.00 0.00 5.2 1.8 1.0 9.3 0.0 2.6 0.0 0.0 2.6 0.0 140 * 14.00 1.80 1.00 0.00 1.00 0.00 0.00 0.00 5.2 1.8 1.0 9.3 0.0 5.2 0.0 0.0 5.2 0.0 141 15.00 1.80 0.20 0.00 0.00 0.20 0.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 1.0 0.0 1.0 0.0 142 15.00 1.80 0.50 0.00 0.00 0.00 0.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 2.6 0.0 2.6 0.0 143 14.00 1.80 1.00 0.00 0.00 1.00 0.00 0.00 5.2 1.8 1.0 9.3 0.0 0.0 5.2 0.0 5.2 0.0 144 13.00 1.80 1.50 0.00 0.00 1.50 0.00 0.00 5.2 1.8 1.0 9.3 0.0 0.0 7.8 0.0 7.8 0.0 145 * 12.00 1.80 2.00 0.00 0.00 2.00 0.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 10.4 0.0 10.4 0.0 146 15.00 1.80 0.50 0.00 0.00 0.00 0.50 0.00 5.2 1.8 1.0 9.3 0.0 0.0 0.0 2.6 2.6 0.0 147 * 14.00 1.80 1.00 0.00 0.00 0.00 1.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 0.0 5.2 5.2 0.0 148 15.
0 1.80 0.20 0.00 0.00 0.00 0.00 0.20 5.2 1.8 1.0 9.3 0.0 0.0 0.0 0.0 1.0 1.0 149 15.00 1.80 0.50 0.00 0.00 0.00 0.00 0.50 5.2 1.
1.0 9.3 0.0 0.0 0.0 0.0 2.6 2.6 150 14.00 1.80 1.00 0.00 0.00 0.00 0.00 1.00 5.2 1.
1.0 9.3 0.0 0.0 0.0 0.0 5.2 5.2 151 13.00 1.80 1.50 0.00 0.00 0.00 0.00 1.50 5.2 1.
1.0 9.3 0.0 0.0 0.0 0.0 7.8 7.8 152 * 12.00 1.80 2.00 0.00 0.00 0.00 0.00 2.00 5.2 1.8 1.0
.3 0.0 0.0 0.0 0.0 10.4 10.4 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composition ratio Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant [mol %] amount [mol %] tan δ Is Hcj ρ ε No. Fe Me(II) Me(IV) D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 122
2.9 10.4 0.0 10.4 1.8
0.050 0.027 322 29 2 × 10
10 123 77.7 13.0 2.6 10.4 1.
4 1.010 0.006 307 31 3 × 10
9 124 72.5 15.5 5.2 10.4 1.09 0.270 0.248 154 102 3 × 10
9 125 77.7 13.0 2.6 10.4 1.52 0.003 0.002 29
13 3 × 10
9 126 72.5 15.5 5.2 10.4 1.08 0.1
3 0.151 2
1 125 3 × 10
9 127 77.7 13.0 2.6 10.4 1.
0.014 0.008 301 31 3 × 10
9 128 72.5 15.5 5.2 10.4 2.14 0.034 0.016 254 34 1 × 10
9 129 67.4 18.1 7.8 10.4 1.78 0.074 0.042 21
52 2 × 10
15 130 62.2 20.7 10.4 10.4 157 0.167 0.1
8 1
7 83 8 × 10
23 131 77.7 13.0 2.6 10.4 1.63 0.014 0.009 311 27 3 × 10
9 132 72.5 15.5 5.2 10.4 1.07 0.249 0.233 187 109 3 × 10
9 133 77.7 13.0 2.6 10.4 1.78 0.01
0.009 300 26 3 × 10
9 134 72.5 15.5 5.2 10.4 2.03 0.052 0.026 2
1 39 1 × 10
9 135 67.4 18.1 7.8 10.4 1.84 0.071 0.039 224 45 2 × 10
15 136
2.2 20.7 10.4 10.4 1.49 0.122 0.082 181 53 8 × 10
23 137 77.7 13.0 2.6 10.4 1.88 0.049 0.026 275 31 3 × 10
9 138 72.5 15.5 5.2 10.4 1.27 0.297 0.234 210 100 3 × 10
9 139 77.7 13.0 2.6 10.4 1.79 0.037 0.021 2
4 39 3 × 10
9 140 72.5 15.5 5.2 10.4 1.27 0.324 0.255 258 1
0 3 × 10
9 141 80.
11.4 1.0 10.4 1.
6 0.00
0.004 32
32 3 × 10
9 142 77.7 13.0 2.
10.4 2.52 0.015 0.00
309 20 2 × 10
9 143 72.5 15.5 5.2 10.4 3.15 0.022 0.007 301 13 3 × 10
10 144 67.4 18.1 7.8 10.4 3.00 0.101 0.034 24
6 4 × 10
16 145 62.2 20.7 10.4 10.4 2.80 0.300 0.107 210 25 8 × 10
37 146 77.7 13.0 2.6 10.4 1.72 0.04
0.02
28
30 3 × 10
9 147 72.5 15.5 5.2 10.4 1.10 0.371 0.312 1
4 179 3 × 10
9 148 80.8 11.4 1.0 10.4 2.03 0.010 0.005 324 26 3 × 10
9 149 77.7 13.0 2.6 10.4 2.49 0.014 0.006 30
21 3 × 10
9 150 72.5 15.5 5.2 10.4 3.1
0.023 0.007 301 13 1 × 10
11 151 67.4 18.1 7.8 10.4 2.98 0.0
9 0.033 248 5 2 × 10
14 152 82.2 20.7 10.4 10.4 2.79 0.
1
0.113 218 34 4 × 10
3
indicates data missing or illegible when filed
[0354] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Co.sub.0.2Mn.sub.1.8+xMe.sub.xFe.sub.16-2xO.sub.27-δ and the composition formula BaCa.sub.0.3Co.sub.0.2Mn.sub.1.8Zn.sub.xMe.sub.xFe.sub.16-2xO.sub.27-δ are shown in Table 10.
TABLE-US-00010 TABLE 10 Composition formula: BaCa Co
Mn
M
Fe
O
and composition formula: BaCa
Co
Mn
Zn
M
Fe
O
Composition formula [mol] Me (II) element Me (IV) element Composition ratio Fe Mn Zn Ge Si Sn Ti Z
[mol %] No. 16-2x 1.8
x x x x x x x Ba C
Mn Ge S
S
Ti Z
Z
153 16.00 1.80 0.00 0.00 0.00 0.00 0.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 0.0 0.0 0.0 0.0 154 15.00 2.30 0.00 0.50 0.00 0.00 0.00 0.00 5.2 1.
1.0 11.9 2.
0.0 0.0 0.0 0.0 0.0 155 * 14.00 2.80 0.00 1.00 0.00 0.00 0.00 0.00 5.2 1.
1.0 14.5 5.2 0.0 0.0 0.0 0.0 0.0 156 15.00 2.30 0.00 0.00 0.50 0.00 0.00 0.00 5.2 1.
1.0 11.9 0.0 2.
0.0 0.0 0.0 0.0 157 * 14.00 2.80 0.00 0.00 1.00 0.00 0.00 0.00 5.2 1.
1.0 14.5 0.0 5.2 0.0 0.0 0.0 0.0 158 15.00 2.30 0.00 0.00 0.00 0.50 0.00 0.00 5.2 1.
1.0 11.9 0.0 0.0 2.8 0.0 0.0 0.0 159 14.00 2.80 0.00 0.00 0.00 1.00 0.00 0.00 5.2 1.
1.0 14.5 0.0 0.0 5.2 0.0 0.0 0.0 160 13.00 3.30 0.00 0.00 0.00 1.50 0.00 0.00 5.2 1.
1.0 17.1 0.0 0.0 7.8 0.0 0.0 0.0 161 * 12.00 3.80 0.00 0.00 0.00 2.00 0.00 0.00 5.2 1.
1.0 1
.7 0.0 0.0 10.4 0.0 0.0 0.0 162 15.00 2.30 0.00 0.00 0.00 0.00 0.50 0.00 5.2 1.
1.0 11.9 0.0 0.0 0.0 2.6 0.0 0.0 163 * 14.00 2.
0 0.00 0.00 0.00 0.00 1.00 0.00 5.2 1.
1.0 14.5 0.0 0.0 0.0 5.2 0.0 0.0 164 15.00 2.30 0.00 0.00 0.00 0.00 0.00 0.50 5.2 1.
1.0 11.9 0.0 0.0 0.0 0.0 0.0 2.6 165 14.00 2.
0 0.00 0.00 0.00 0.00 0.00 1.00 5.2 1.
1.0 14.5 0.0 0.0 0.0 0.0 0.0 5.2 166 13.00 3.30 0.00 0.00 0.00 0.00 0.00 1.50 5.2 1.
1.0 17.1 0.0 0.0 0.0 0.0 0.0 7.8 167 * 12.00 3.80 0.00 0.00 0.00 0.00 0.00 2.00 5.2 1.
1.0 19.7 0.0 0.0 0.0 0.0 0.0 10.4 168 15.00 1.80 0.50 0.50 0.00 0.00 0.00 0.00 5.2 1.
1.0
.3 2.6 0.0 0.0 0.0 2.6 0.0 169 * 14.00 1.80 1.00 1.00 0.00 0.00 0.00 0.00 5.2 1.
1.0
.3 5.2 0.0 0.0 0.0
.2 0.0 170 15.00 1.80 0.50 0.00 0.50 0.00 0.00 0.00 5.2 1.
1.0 9.3 0.0 2.
0.0 0.0 2.6 0.0 171 * 14.00 1.80 1.00 0.00 1.00 0.00 0.00 0.00 5.2 1.
1.0
.3 0.0 5.2 0.0 0.0 5.2 0.0 172 15.80 1.80 0.20 0.00 0.00 0.20 0.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 1.0 0.0 1.0 0.0 173 15.00 1.80 0.50 0.00 0.00 0.50 0.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 2.
0.0 2.
0.0 174 14.00 1.80 1.00 0.00 0.00 1.00 0.00 0.00 5.2 1.
1.0
.3 0.0 0.0 5.2 0.0 5.2 0.0 175 13.00 1.80 1.50 0.00 0.00 1.50 0.00 0.00 5.2 1.
1.0
.3 0.0 0.0 7.
0.0 7.
0.0 176 * 12.00 1.80 2.00 0.00 0.00 2.00 0.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 10.4 0.0 10.4 0.0 177 15.00 1.80 0.50 0.00 0.00 0.00 0.50 0.00 5.2 1.
1.0 9.3 0.0 0.00 0.0 2.6 2.6 0.0 178 * 14.00 1.
0 1.00 0.00 0.00 0.00 1.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 0.0 5.2 5.2 0.0 179 15.
0 1.
0 0.20 0.00 0.00 0.00 0.00 0.20 5.2 1.
1.0 9.3 0.0 0.0 0.0 0.0 1.0 1.0 1
0 15.00 1.80 0.50 0.00 0.00 0.00 0.00 0.50 5.2 1.
1.0
.3 0.0 0.0 0.0 0.0 2.6 2.6 1
1 14.00 1.80 1.00 0.00 0.00 0.00 0.00 1.00 5.2 1.
1.0
.3 0.0 0.0 0.0 0.0 5.2 5.2 182 13.00 1.80 1.50 0.00 0.00 0.00 0.00 1.50 5.2 1.
1.0 9.3 0.0 0.0 0.0 0.0 7.8 7.8 183 * 12.00 1.80 2.00 0.00 0.00 0.00 0.00 2.00 5.2 1.
1.0 9.3 0.0 0.0 0.0 0.0 10.4 10.4 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composition ratio Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant [mol %] amount [mol %] tan δ Is Hcj ρ ε No. Fe M
(II) M
(IV) D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 153
2.9 10.4 0.0 10.4 1.62 0.006 0.004 401 25 2 × 10
10 154 77.7 13.0 2.6 10.4 1.54 0.010 0.006 387 31 3 × 10
9 155 72.5 15.5 5.2 10.4 1.09 0.270 0.24
209 102 3 × 10
9 156 77.7 13.0 2.6 10.4 1.
2 0.0
3 0.002 390 13 3 × 10
9 157 72.5 15.5 5.2 10.4 1.08 0.1
3 0.151 228 125 3 × 10
158 77.7 13.0 2.6 10.4 1.87 0.014 0.00
3
3 31 3 × 10
9 159 72.5 15.5 5.2 10.4 2.14 0.034 0.016 349 34 1 × 10
9 160 67.4 18.1 7.8 10.4 1.93 0.078 0.040 310 51
× 10
15 161 62.2 20.7 10.4 10.4 1.57 0.167 0.106 277
9 8 × 10
23 162 77.7 13.0 2.
10.4 1.
3 0.014 0.009 392 27 3 × 10
9 163 72.5 15.5 5.2 10.4 1.07 0.249 0.233 20
109 3 × 10
9 164 77.7 13.
2.
10.4 1.78 0.016 0.009 410 26 3 × 10
165 72.5 15.5
.2 10.4 2.25 0.072 0.0
2 372 23 1 × 10
9 166
7.4 18.1 7.8 10.4 1.77 0.0
0.050 321 45 2 × 10
15 167 62.2 20.7 10.4 10.4 1.49 0.122 0.0
2 27
53 8 × 10
23 168 77.7 13.0 2.6 10.4 1.
8 0.049 0.026 374 31 3 × 10
9 169 72.5 15.5 5.2 10.4 1.27 0.297 0.234 20
100 3 × 10
9 170 77.7 13.0 2.6 10.4 1.79 0.037 0.021 3
39 3 × 10
171 72.5 15.5 5.2 10.4 1.27 0.324 0.253 251 180 3 × 10
9 172
0.
11.4 1.0 10.4 1.96 0.009 0.004 3
32 3 × 10
9 173 77.7 13.0 2.6 10.4 2.57 0.015 0.006 3
4 20 2 × 10
9 174 72.5 15.5 5.2 10.4 3.15 0.022 0.007 3
13 3 × 10
10 175
7.4 10.1 7.8 10.4 2
8 0.101 0.034 351 10 4 × 10
1
176 62.2 20.7 10.4 10.4 2.80 0.300 0.107 312 6 6 × 10
37 177 77.7 13.0 2.6 10.4 1.72 0.04
0.02
374 30 3 × 10
178 72.5 15.5 5.2 10.4 1.19 0.371 0.312 206 179 3 × 10
9 179
0.
11.4 1.0 10.4 2.03 0.052 0.026 3
1 26 3 × 10
9 1
0 77.7 13.0 2.
10.4 2.49 0.014 0.00
3
3 13 3 × 10
1
1 72.5 15.5 5.2 10.4 3.15 0.023 0.007 395 13 1 × 10
11 182 67.4 18.1 7.8 10.4 2.88 0.124 0.043 3
4
2 × 10
14 183 62.2 20.7 10.4 10.4 2.7
0.316 0.113 310 5 4 × 10
36
indicates data missing or illegible when filed
[0355] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Co.sub.0.2Ni.sub.1.8+xMe.sub.xFe.sub.16-2xO.sub.27-δ and the composition formula
[0356] BaCa.sub.0.3Co.sub.0.2Ni.sub.1.8Zn.sub.xMe.sub.xFe.sub.16-2xO.sub.27-δ are shown in Table 11.
TABLE-US-00011 TABLE 11 Composition formula: BaCa Co
Ni
M
Fe
O
and composition formula: BaCa
Co
Ni
Zn
M
Fe
O
Composition formula [mol] Me (II) element Me (IV) element Composition ratio Fe Ni Zn Ge Si Sn Ti Z
[mol %] No. 1
-2x 1.8
x x x x x x B
Ca Co Ni Ge Si Sn Ti Zn Z
184 15.00 1.80 0.00 0.00 0.00 0.00 0.00 0.00 5.2 1.
1.0
.3 0.0 0.0 0.0 0.0 0.0 0.0 185 15.00 2.30 0.00 0.50 0.00 0.00 0.00 0.00 5.2 1.6 1.0 11.9 2.6 0.0 0.0 0.0 0.0 0.0 186 * 14.00 2.80 0.00 1.00 0.00 0.00 0.00 0.00 5.2 1.
1.0 14.5 5.2 0.0 0.0 0.0 0.0 0.0 187 15.00 2.30 0.00 0.00 0.50 0.00 0.00 0.00 5.2 1.6 1.0 11.9 0.0 2.
0.0 0.0 0.0 0.0 188 * 14.00 2.80 0.00 0.00 1.00 0.00 0.00 0.00 5.2 1.
1.0 14.5 0.0 5.2 0.0 0.0 0.0 0.0 189 15.00 2.30 0.00 0.00 0.00 0.50 0.00 0.00 5.2 1.
1.0 11.9 0.0 0.0 2.6 0.0 0.0 0.0 190 14.00 2.80 0.00 0.00 0.00 1.00 0.00 0.00 5.2 1.
1.0 14.5 0.0 0.0 5.2 0.0 0.0 0.0 191 13.00 3.30 0.00 0.00 0.00 1.50 0.00 0.00 5.2 1.6 1.0 17.1 0.0 0.0 7.8 0.0 0.0 0.0 192 * 12.00 3.80 0.00 0.00 0.00 2.00 0.00 0.00 5.2 1.6 1.0 19.7 0.0 0.0 10.4 0.0 0.0 0.0 193 15.00 2.30 0.00 0.00 0.00 0.00 0.50 0.00 5.2 1.
1.0 11.
0.0 0.0 0.0 2.6 0.0 0.0 194 * 14.00 2.
0 0.00 0.00 0.00 0.00 1.00 0.00 5.2 1.6 1.0 14.5 0.0 0.0 0.0 5.2 0.0 0.0 195 15.00 2.30 0.00 0.00 0.00 0.00 0.00 0.50 5.2 1
1.0 11.9 0.0 0.0 0.0 0.0 0.0 2.6 19
14.00 2.
0 0.00 0.00 0.00 0.00 0.00 1.00 5.2 1.
1.0 14.5 0.0 0.0 0.0 0.0 0.0 5.2 197 13.00 3.30 0.00 0.00 0.00 0.00 0.00 1.50 5.2 1.6 1.0 17.1 0.0 0.0 0.0 0.0 0.0 7.8 198 * 12.00 3.80 0.00 0.00 0.00 0.00 0.00 2.00 5.2 1.
1.0 1
.7 0.0 0.0 0.0 0.0 0.0 10.4 1
9 15.00 1.80 0.50 0.50 0.00 0.00 0.00 0.00 5.2 1.6 1.0
.3 2.
0.0 0.0 0.0 2.6 0.0 200 * 14.00 1.80 1.00 1.00 0.00 0.00 0.00 0.00 5.2 1.
1.0 9.3 5.2 0.0 0.0 0.0 5.2 0.0 201 15.00 1.80 0.50 0.00 0.50 0.00 0.00 0.00 5.2 1.
1.0 9.3 0.0 2.
0.0 0.0 2.6 0.0 202 * 14.00 1.80 1.00 0.00 1.00 0.00 0.00 0.00 5.2 1.6 1.0
.3 0.0 5.2 0.0 0.0 5.2 0.0 203 15.80 1.80 0.20 0.00 0.00 0.20 0.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 1.0 0.0 1.0 0.0 204 15.00 1.80 0.50 0.00 0.00 0.50 0.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 2.6 0.0 2.6 0.0 205 14.00 1.80 1.00 0.00 0.00 1.00 0.00 0.00 5.2 1.6 1.0
.3 0.0 0.0 5.2 0.0 5.2 0.0 206 13.00 1.80 1.50 0.00 0.00 1.50 0.00 0.00 5.2 1.6 1.0
.3 0.0 0.0 7.8 0.0 7.8 0.0 207 * 12.00 1.80 2.00 0.00 0.00 2.00 0.00 0.00 5.2 1.
1.0 9.3 0.0 0.0 10.4 0.0 10.4 0.0 208 15.00 1.80 0.50 0.00 0.00 0.00 0.50 0.00 5.2 1.
1.0 9.3 0.0 0.0 0.0 2.6 2.6 0.0 209 * 14.00 1.80 1.00 0.00 0.00 0.00 1.00 0.00 5.2 1.6 1.0
.3 0.0 0.0 0.0 5.2 5.2 0.0 210 15.
0 1.80 0.20 0.00 0.00 0.00 0.00 0.20 5.2 1.6 1.0 9.3 0.0 0.0 0.0 0.0 1.0 1.0 211 15.00 1.80 0.50 0.00 0.00 0.00 0.00 0.50 5.2 1.
1.0 9.3 0.0 0.0 0.0 0.0 2.6 2.
212 14.00 1.80 1.00 0.00 0.00 0.00 0.00 1.00 5.2 1.
1.0 9.3 0.0 0.0 0.0 0.0 5.2 5.2 213 13.00 1.80 1.50 0.00 0.00 0.00 0.00 1.50 5.2 1.6 1.0 9.3 0.0 0.0 0.0 0.0 7.8 7.8 214 * 12.00 1.80 2.00 0.00 0.00 0.00 0.00 2.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 0.0 10.4 10.4 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composition ratio Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant [mol %] amount [mol %] tan δ Is Hcj ρ ε No. Fe Me(II) Me(IV) D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 184 82.9 10.4 0.0 10.4 1.38 0.046 0.033 297
2 2 × 10
10 185 77.7 13.0 2.6 10.4 1.30 0.035 0.027 286 31 3 × 10
9 186 72.5 15.5 5.2 10.4 0.
1 0.345 0.379 147 102 3 × 10
9 187 77.7 13.0 2.
10.4 1.31 0.011 0.002 287 13 3 × 10
9 188 72.5 15.5 5.2 10.4 1.05 0.157 0.150 164 125 3 × 10
9 189 77.7 13.0 2.
10.4 1.48 0.03
0.02
291 31 3 × 10
9 190 72.5 15.5 5.2 10.4 1.96 0.0
0.030 2
7 34 1 × 10
9 191 67.4 18.1 7.8 10.4 1.75 0.105 0.0
0 231 45 2 × 10
15 192 52.2 20.7 10.4 10.4 1.43 0.158 0.117 197
9 8 × 10
23 193 77.7 13.0 2.
10.4 1.33 0.03
0.009 302 27 3 × 10
9 194 72.5 15.5 5.2 10.4 1.04 0.23
0.2
154 109 3 × 10
9 195 77.7 13.0 2.
10.4 1.47 0.0
7 0.025 290 26 3 × 10
9 19
72.5 15.5 5.2 10.4 1.
0.0
1 0.027 284 39 1 × 10
9 197
7.4 18.1 7.
10.4 1.
9 0.078 0.045 267 44 2 × 10
15 198
2.2 20.7 10.4 10.4 1.34 0.123 0.0
2 24
53
× 10
23 1
9 77.7 13.0 2.6 10.4 1.44 0.045 0.031 274 31 3 × 10
9 200 72.5 15.5 5.2 10.4 1.09 0.2
0.2
5 209 100 3 × 10
9 201 77.7 13.0 2.6 10.4 1.39 0.034 0.024 286 39 3 × 10
9 202 72.5 15.5 5.2 10.4 1.08 0.315 0.292 251 180 3 × 10
9 203
0.
11.4 1.0 10.4 1.79 0.039 0.022 30
32 3 × 10
9 204 77.7 13.0 2.
10.4 2.37 0.041 0.017 321 21 2 × 10
9 205 72.5 15.5 5.2 10.4 2.
0.047 0.018 354 13 3 × 10
10 206
7.4 1
.1 7.8 10.4 2.51 0.121 0.048 326 10 4 × 10
16 207
2.2 20.7 10.4 10.4 2.34 0.302 0.129 291
× 10
37 208 77.7 13.0 2.
10.4 1.42 0.046 0.034 275 30 3 × 10
9 209 72.5 15.5 5.2 10.4 1.14 0.372 0.326 208 179 3 × 10
9 210
0.
11.4 1.0 10.4 1.71 0.041 0.024 2
9 2
3 × 10
9 211 77.7 13.0 2.0 10.4 2.11 0.0
3 0.025 282 20 3 × 10
9 212 72.5 15.5 5.2 10.4 2.56 0.064 0.025 27
13 1 × 10
11 213 87.4 18.1 7.8 10.4 2.47 0.105 0.043 245 9 2 × 10
14 214
2.2 20.7 10.4 10.4 2.31 0.315 0.13
210
4 × 10
36
indicates data missing or illegible when filed
[0357] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Co.sub.0.2Zn.sub.1.8+xMe.sub.xFe.sub.16-2xO.sub.27-δ and the composition formula BaCa.sub.0.3Co.sub.0.2Zn.sub.1.8Ni.sub.xMe.sub.xFe.sub.16-2xO.sub.27-δ are shown in Table 12.
TABLE-US-00012 TABLE 12 Composition formula: BaCa Co
Z
M
Fe
O
and composition formula: BaCa
Co
Zn
Ni
Me
Fe
O
Composition formula [mol] Me (II) element Me (IV) element Composition ratio Fe Zn Ni Ge Si S
Ti [mol %] No. 16-2x 1.8
x x
x x x Z
B
Ca Co G
Ni Si S
Ti Z
Z
215 1
.00 1.
0 0.00 0.00 0.00 0.00 0.00 0.00 5.2 1.6 1.0 0.0 0.0 0.0 0.0 0.0
.3 0.0 216 15.00 2.30 0.00 0.50 0.00 0.00 0.00 0.00 5.2 1.6 1.0 2.
0.0 0.0 0.0 0.0 11.
0.0 217 * 14.00 2.80 0.00 1.00 0.00 0.00 0.00 0.00 5.2 1.6 1.0 5.2 0.0 0.0 0.0 0.0 14.5 0.0 218 15.00 2.30 0.00 0.00 0.50 0.00 0.00 0.00 5.2 1.
1.0 0.0 0.0 2.6 0.0 0.0 11.
0.0 219 * 14.00 2.80 0.00 0.00 1.00 0.00 0.00 0.00 5.2 1.6 1.0 0.0 0.0 5.2 0.0 0.0 14.5 0.0 220 15.00 2.30 0.00 0.00 0.00 0.50 0.00 0.00 5.2 1.6 1.0 0.0 0.0 0.0 2.
0.0 11.9 0.0 221 14.00 2.80 0.00 0.00 0.00 1.00 0.00 0.00 5.2 1.
1.0 0.0 0.0 0.0 5.2 0.0 14.5 0.0 222 13.00 3.30 0.00 0.00 0.00 1.50 0.00 0.00 5.2 1.6 1.0 0.0 0.0 0.0 7.8 0.0 17.1 0.0 223 * 12.00 3.80 0.00 0.00 0.00 2.00 0.00 0.00 5.2 1.6 1.0 0.0 0.0 0.0 10.4 0.0 1
.7 0.0 224 15.00 2.30 0.00 0.00 0.00 0.00 0.50 0.00 5.2 1.6 1.0 0.0 0.0 0.0 0.0 2.
11.9 0.0 225 * 14.00 2.80 0.00 0.00 0.00 0.00 1.00 0.00 5.2 1.
1.0 0.0 0.0 0.0 0.0 5.2 14.5 0.0 226 15.00 2.30 0.00 0.00 0.00 0.00 0.00 0.50 5.2 1.6 1.0 0.0 0.0 0.0 0.0 0.0 11.9 2.6 227 14.00 2.80 0.00 0.00 0.00 0.00 0.00 1.00 5.2 1.6 1.0 0.0 0.0 0.0 0.0 0.0 14.5 5.2 228 13.00 3.30 0.00 0.00 0.00 0.00 0.00 1.50 5.2 1.6 1.0 0.0 0.0 0.0 0.0 0.0 17.1 7.
229 * 12.00 3.80 0.00 0.00 0.00 0.00 0.00 2.00 5.2 1.6 1.0 0.0 0.0 0.0 0.0 0.0 1
.7 10.4 230 15.00 1.80 0.50 0.50 0.00 0.00 0.00 0.00 5.2 1.
1.0 2.
2.
0.0 0.0 0.0 9.3 0.0 231 * 14.00 1.
0 1.00 1.00 0.00 0.00 0.00 0.00 5.2 1.6 1.0 5.2 5.2 0.0 0.0 0.0 9.3 0.0 232 15.00 1.80 0.50 0.00 0.50 0.00 0.00 0.00 5.2 1.6 1.0 0.0 2.
2.
0.0 0.0 9.3 0.0 233 * 14.00 1.80 1.00 0.00 1.00 0.00 0.00 0.00 5.2 1.
1.0 0.0 5.2 5.2 0.0 0.0 9.3 0.0 234 15.
0 1.80 0.20 0.00 0.00 0.20 0.00 0.00 5.2 1.6 1.0 0.0 1.0 0.0 1.0 0.0 9.3 0.0 235 15.00 1.80 0.50 0.00 0.00 0.50 0.00 0.00 5.2 1.6 1.0 0.0 2.
0.0 2.
0.0 9.3 0.0 236 14.00 1.80 1.00 0.00 0.00 l.00 0.00 0.00 5.2 1.6 1.0 0.0 5.2 0.0 5.2 0.0 9.3 0.0 237 13.00 1.80 1.50 0.00 0.00 1.50 0.00 0.00 5.2 1.6 1.0 0.0 7.8 0.0 7.8 0.0 9.3 0.0 238 * 12.00 1.80 2.00 0.00 0.00 2.00 0.00 0.00 5.2 1.6 1.0 0.0 10.4 0.0 10.4 0.0 9.3 0.0 23
15.00 1.80 0.50 0.00 0.00 0.00 0.50 0.00 5.2 1.6 1.0 0.0 2.6 0.0 0.0 2.
9.3 0.0 240 * 14.00 1.80 1.00 0.00 0.00 0.00 1.00 0.00 5.2 1.6 1.0 0.0 5.2 0.0 0.0 5.2 9.3 0.0 241 15.80 1.80 0.20 0.00 0.00 0.00 0.00 0.20 5.2 1.6 1.0 0.0 1.0 0.0 0.0 0.0 9.3 1.0 242 15.00 1.80 0.50 0.00 0.00 0.00 0.00 0.50 5.2 1.6 1.0 0.0 2.
0.0 0.0 0.0 9.3 2.8 243 14.00 1.80 1.00 0.00 0.00 0.00 0.00 1.00 5.2 1.6 1.0 0.0
.2 0.0 0.0 0.0 9.3 5.2 244 13.00 1.80 1.50 0.00 0.00 0.00 0.00 1.50 5.2 1.6 1.0 0.0 7.8 0.0 0.0 0.0 9.3 7
245 * 12.00 1.80 2.00 0.00 0.00 0.00 0.00 2.00 5.2 1.6 1.0 0.0 10.4 0.0 0.0 0.0 9.3 10.4 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composition ratio Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant [mol %] amount [mol %] tan δ Is Hcj ρ ε No. Fe Me(II) Me(IV) D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 215 82.
10.4 0.0 10.4 1.45 0.013 0.00
404 41 2 × 10
10 216 77.7 13.0 2.6 10.4 1.34 0.015 0.011 38
40 3 × 10
217 72.5 15.5 5.2 10.4 1.05 0.2
4 0.270 216 106 3 × 10
9 218 77.7 13.0 2.
10.4 1.42 0.014 0.002 3
23 3 × 10
9 219 72.5 15.5 5.2 10.4 0.97 0.15
0.1
1 231 134 3 × 10
9 220 77.7 13.0 2.6 10.4 1.
2 0.015 0.010 3
5 33 3 × 10
9 221 72.5 15.5 5.2 10.4 1.
7 0.052 0.026 351 36 1 × 10
9 222 67.4 18.1 7.8 10.4 1.76 0.104 0.05
326 51 2 × 10
1
223 62.2 20.7 10.4 10.4 1.56 0.149 0.0
268 79 8 × 10
23 224 77.7 13.0 2.6 10.4 1.53 0.014 0.009 399 27 3 × 10
9 225 72.5 15.5 5.2 10.4 1.08 0.245 0.231 216 110 3 × 10
9 226 77.7 13.0 2.6 10.4 1.
0.017 0.010 3
9 27 3 × 10
9 227 72.5 15.5 5.2 10.4 1.87 0.049 0.025 325 36 2 × 10
9 228 67.4 18.1 7.8 10.4 1.
4 0.08
0.0
4 301 45 1 × 10
9 229 82.2 20.7 10.4 10.4 1.4
0.114 0.077 2
1
2 4 × 10
9 230 77.7 13.0 2.
10.4 1.79 0.048 0.027 376 34 3 × 10
9 231 72.5 15.5 5.2 10.4 1.26 0.279 0.221 251 101 3 × 10
9 232 77.7 13.0 2.6 10.4 1.
0.034 0.020 2
8 38 3 × 10
9 233 72.5 15.5 5.2 10.4 1.25 0.3
1 0.2
1 249 179 3 × 10
9 234 80.
11.4 1.0 10.4 1.87 0.015 0.004 3
4 33 3 × 10
9 235 77.7 13.0 2.6 10.4 2.29 0.019 0.008 3
22 2 × 10
9 236 72.5 15.5 5.2 10.4 2.
7 0.027 0.009 3
7 14 3 × 10
10 237 67.4 18.1 7.8 10.4 2.
1 0.10
0.039 355 10 4 × 10
16 238
2.2 20.7 10.4 10.4 2.
7 0.31
0.107 311 7 6 × 10
37 23
77.7 13.0 2.6 10.4 1.67 0.051 0.031 374 36 3 × 10
9 240 72.5 15.5 5.2 10.4 1.18 0.376 0.313 24
1
3 × 10
9 241 80.
11.4 1.0 10.4 1.9
0.013 0.007 3
2 29 3 × 10
9 242 77.7 13.0 2.6 10.4 2.34 0.020 0.009 3
21 3 × 10
9 243 72.5 15.5 5.2 10.4 2.79 0.027 0.010 401 14 1 × 10
11 244 67.4 18.1 7.8 10.4 2.
2 0.121 0.04
380 11 2 × 10
14 245 62.2 20.7 10.4 10.4 2.51 0.329 0.131 315 5 4 × 10
36
indicates data missing or illegible when filed
[0358] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Co.sub.0.2Mg.sub.1.8(Fe.sub.16-xMe.sub.x)O.sub.27-δ are shown in Table 13.
TABLE-US-00013 TABLE 13 Composition formula: BaCa.sub.0.3Co.sub.0.2Mg (Fe
.sub.16-xM
)O.sub.27
Composition formula [mol] Me (III) element Composition ratio Composite composition Fe Al Ga In S
[mol %] amount [mol %] No. 16-x x x x x Ba Ca Co Mg Al Ga In S
Fe Me(II) 246 16.00 0.00 0.00 0.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 0.0 82.9 10.4 247 15.50 0.50 0.00 0.00 0.00 5.2 1.6 1.0 9.3 2.6 0.0 0.0 0.0 80.3 10.4 248 * 15.00 1.00 0.00 0.00 0.00 5.2 1.6 1.0 9.3 5.2 0.0 0.0 0.0 77.7 10.4 249 15.50 0.00 0.50 0.00 0.00 5.2 1.6 1.0 9.3 0.0 2.6 0.0 0.0 80.3 10.4 250 * 15.00 0.00 1.00 0.00 0.00 5.2 1.6 1.0 9.3 0.0 5.2 0.0 0.0 77.7 10.4 251 15.80 0.00 0.00 0.20 0.00 5.2 1.6 1.0 9.3 0.0 0.0 1.0 0.0 81.9 10.4 252 15.50 0.00 0.00 0.50 0.00 5.2 1.6 1.0 9.3 0.0 0.0 2.
0.0 80.3 10.4 253 15.00 0.00 0.00 1.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 5.2 0.0 77.7 10.4 254 14.50 0.00 0.00 1.50 0.00 5.2 1.6 1.0 9.3 0.0 0.0 7.8 0.0 75.1 10.4 255 * 14.00 0.00 0.00 2.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 10.4 0.0 72.5 10.4 256 15.80 0.00 0.00 0.00 0.20 5.2 1.6 1.0 9.3 0.0 0.0 0.0 1.0 81.9 10.4 257 15.50 0.00 0.00 0.00 0.50 5.2 1.6 1.0 9.3 0.0 0.0 0.0 2.
80.3 10.4 258 15.00 0.00 0.00 0.00 1.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 5.2 77.7 10.4 259 14.50 0.00 0.00 0.00 1.50 5.2 1.6 1.0 9.3 0.0 0.0 0.0 7.8 75.1 10.4 260 * 14.00 0.00 0.00 0.00 2.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 10.4 72.5 10.4 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant amount [mol %] tan δ Is Hcj ρ ε No. Me(IV) D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 246 0.0 10.4 1.88 0.050 0.027 322 29 2 × 10
10 247 0.0 10.4 1.41 0.044 0.031 304 39 3 × 10
9 248 0.0 10.4 1.09 0.305 0.280 258 141 4 × 10
9 249 0.0 10.4 1.39 0.061 0.044 306 51 3 × 10
9 250 0.0 10.4 1.0
0.318 0.294 249 134 4 × 10
9 251 0.0 10.4 2.01 0.041 0.020 316 25 3 × 10
9 252 0.0 10.4 2.29 0.079 0.034 299 22 4 × 10
9 253 0.0 10.4 2.51 0.101 0.040 274 19 4 × 10
9 254 0.0 10.4 2.16 0.126 0.058 236 14 3 × 10
10 255 0.0 10.4 1.61 0.364 0.226 187 10 1 × 10
15 256 0.0 10.4 1.91 0.051 0.027 318 24 3 × 10
9 257 0.0 10.4 2.24 0.078 0.035 301 20 4 × 10
9 258 0.0 10.4 2.49 0.098 0.039 264 16 4 × 10
9 259 0.0 10.4 1.87 0.112 0.0
0 241 11 2 × 10
10 260 0.0 10.4 1.49 0.344 0.231 197 7 9 × 10
16
indicates data missing or illegible when filed
[0359] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Co.sub.0.2Mn.sub.1.8(Fe.sub.16-xMe.sub.x)O.sub.27-δ are shown in Table 14.
TABLE-US-00014 TABLE 14 Composition formula: BaCa.sub.0.3Co.sub.0.2Mn.sub.1.0(Fe.sub.16-xMe )O.sub.27
Composition formula [mol] Me (III) element Composition ratio Composite composition Fe Al Ga In Sc [mol %] amount [mol %] No. 16-x x x x x Ba Ca Co Mn Al Ga In Sc Fe Me(II) 261 16.00 0.00 0.00 0.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 0.0 82.9 10.4 262 15.50 0.50 0.00 0.00 0.00 5.2 1.
1.0 9.3 2.6 0.0 0.0 0.0 80.3 10.4 263 * 15.00 1.00 0.00 0.00 0.00 5.2 1.6 1.0 9.3 5.2 0.0 0.0 0.0 77.7 10.4 264 15.50 0.00 0.50 0.00 0.00 5.2 1.6 1.0 9.3 0.0 2.6 0.0 0.0 80.3 10.4 265 * 15.00 0.00 1.00 0.00 0.00 5.2 1.6 1.0 9.3 0.0 5.2 0.0 0.0 77.7 10.4 266 15.80 0.00 0.00 0.20 0.00 5.2 1.6 1.0 9.3 0.0 0.0 1.0 0.0 81.9 10.4 267 15.50 0.00 0.00 0.50 0.00 5.2 1.
1.0 9.3 0.0 0.0 2.6 0.0 80.3 10.4 268 15.00 0.00 0.00 1.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 5.2 0.0 77.7 10.4 269 14.50 0.00 0.00 1.50 0.00 5.2 1.6 1.0 9.3 0.0 0.0 7.8 0.0 75.1 10.4 270 * 14.00 0.00 0.00 2.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 10.4 0.0 72.5 10.4 271 15.80 0.00 0.00 0.00 0.20 5.2 1.6 1.0 9.3 0.0 0.0 0.0 1.0 81.9 10.4 272 15.50 0.00 0.00 0.00 0.50 5.2 1.6 1.0 9.3 0.0 0.0 0.0 2.6 80.3 10.4 273 15.00 0.00 0.00 0.00 1.00 5.2 1.
1.0 9.3 0.0 0.0 0.0 5.2 77.7 10.4 274 14.50 0.00 0.00 0.00 1.50 5.2 1.6 1.0 9.3 0.0 0.0 0.0 7.8 75.1 10.4 275 * 14.00 0.00 0.00 0.00 2.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 10.4 72.5 10.4 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant amount [mol %] tan δ Is Hcj ρ ε No. Me(IV) D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 261 0.0 10.4 1.62 0.00
0.004 401 2
2 × 10
10 262 0.0 10.4 1.57 0.038 0.024 364 45 3 × 10
9 263 0.0 10.4 1.28 0.264 0.206 315 151 4 × 10
9 264 0.0 10.4 1.56 0.041 0.026 359 51 3 × 10
9 265 0.0 10.4 1.21 0.310 0.256 312 312 4 × 10
9 266 0.0 10.4 1.66 0.018 0.010 391 21 3 × 10
9 267 0.0 10.4 1.98 0.067 0.034 364 18 4 × 10
9 268 0.0 10.4 2.45 0.102 0.042 315 15 4 × 10
9 269 0.0 10.4 2.01 0.116 0.058 265 12 3 × 10
11 270 0.0 10.4 1.49 0.247 0.166 207 9 1 × 10
17 271 0.0 10.4 1.81 0.015 0.008 389 22 3 × 10
9 272 0.0 10.4 2.23 0.046 0.021 351 19 4 × 10
9 273 0.0 10.4 2.51 0.089 0.035 312 14 4 × 10
9 274 0.0 10.4 1.95 0.115 0.0
267 11 2 × 10
12 275 0.0 10.4 1.56 0.315 0.202 210 8 9 × 10
18
indicates data missing or illegible when filed
[0360] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Co.sub.0.2Ni.sub.1.8(Fe.sub.16-xMe.sub.x)O.sub.27-δ are shown in Table 15.
TABLE-US-00015 TABLE 15 Composition formula: BaCa.sub.0.3Co.sub.0.2Ni (Fe
Me
)O.sub.27-
Composition formula [mol] Me (III) element Composition ratio Composite composition Fe Al Ga In Sc [mol %] amount [mol %] No. 16-x x x x x Ba Ca Co Ni Al Ga In Sc Fe Me(II) 276 16.00 0.00 0.00 0.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 0.0 82.9 10.4 277 15.50 0.50 0.00 0.00 0.00 5.2 1.
1.0 9.3 2.6 0.0 0.0 0.0 80.3 10.4 278 * 15.00 1.00 0.00 0.00 0.00 5.2 1.6 1.0 9.3 5.2 0.0 0.0 0.0 77.7 10.4 279 15.50 0.00 0.50 0.00 0.00 5.2 1.6 1.0 9.3 0.0 2.6 0.0 0.0 80.3 10.4 280 * 15.00 0.00 1.00 0.00 0.00 5.2 1.6 1.0 9.3 0.0 5.2 0.0 0.0 77.7 10.4 281 15.80 0.00 0.00 0.20 0.00 5.2 1.6 1.0 9.3 0.0 0.0 1.0 0.0 81.9 10.4 282 15.50 0.00 0.00 0.50 0.00 5.2 1.6 1.0 9.3 0.0 0.0 2.6 0.0 80.3 10.4 283 15.00 0.00 0.00 1.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 5.2 0.0 77.7 10.4 284 14.50 0.00 0.00 1.50 0.00 5.2 1.6 1.0 9.3 0.0 0.0 7.8 0.0 75.1 10.4 285 * 14.00 0.00 0.00 2.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 10.4 0.0 72.5 10.4 286 15.80 0.00 0.00 0.00 0.20 5.2 1.6 1.0 9.3 0.0 0.0 0.0 1.0 81.9 10.4 287 15.50 0.00 0.00 0.00 0.50 5.2 1.6 1.0 9.3 0.0 0.0 0.0 2.6 80.3 10.4 288 15.00 0.00 0.00 0.00 1.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 5.2 77.7 10.4 289 14.50 0.00 0.00 0.00 1.50 5.2 1.6 1.0 9.3 0.0 0.0 0.0 7.8 75.1 10.4 290 * 14.00 0.00 0.00 0.00 2.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 10.4 72.5 10.4 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant amount [mol %] tan δ Is Hcj ρ ε No. Me(IV) D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 276 0.0 10.4 1.38 0.048 0.033 297 92 2 × 10
10 277 0.0 10.4 1.25 0.0
1 0.049 252 99 3 × 10
9 278 0.0 10.4 1.08 0.357 0.331 191 204 4 × 10
9 279 0.0 10.4 1.24 0.067 0.054 249 9
3 × 10
9 280 0.0 10.4 1.09 0.401 0.368 203 251 4 × 10
9 281 0.0 10.4 1.56 0.030 0.019 289
2 3 × 10
9 282 0.0 10.4 1.78 0.068 0.038 261 48 4 × 10
9 283 0.0 10.4 2.26 0.094 0.042 240 34 4 × 10
10 284 0.0 10.4 2.01 0.101 0.050 15
27 3 × 10
16 285 0.0 10.4 1.89 0.216 0.114 109 21 1 × 10
23 286 0.0 10.4 1.52 0.02
0.019 284 66 3 × 10
9 287 0.0 10.4 1.86 0.059 0.032 265 49 4 × 10
9 288 0.0 10.4 2.27 0.111 0.049 241 32 4 × 10
10 289 0.0 10.4 2.12 0.120 0.0
7 171 27 2 × 10
15 290 0.0 10.4 1.94 0.214 0.110 111 17 9 × 10
24
indicates data missing or illegible when filed
[0361] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Co.sub.0.2Zn.sub.1.8(Fe.sub.16-xMe.sub.x)O.sub.27-δ are shown in Table 16.
TABLE-US-00016 TABLE 16 Composition formula: BaCa.sub.0.3Co.sub.0.2Zn.sub.1.0(Fe.sub.16-xMe )O
Composition formula [mol] Me (III) element Composition ratio Composite composition Fe Al Ga In Sc [mol %] amount [mol %] No. 16-x x x x x Ba Ca Co Zn Al Ga In Sc Fe Me(II) 291 16.00 0.00 0.00 0.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 0.0 82.9 10.4 292 15.50 0.50 0.00 0.00 0.00 5.2 1.6 1.0 9.3 2.6 0.0 0.0 0.0 80.3 10.4 293 * 15.00 1.00 0.00 0.00 0.00 5.2 1.6 1.0 9.3 5.2 0.0 0.0 0.0 77.7 10.4 294 15.50 0.00 0.50 0.00 0.00 5.2 1.
1.0 9.3 0.0 2.6 0.0 0.0 80.3 10.4 295 * 15.00 0.00 1.00 0.00 0.00 5.2 1.6 1.0 9.3 0.0 5.2 0.0 0.0 77.7 10.4 296 15.80 0.00 0.00 0.20 0.00 5.2 1.6 1.0 9.3 0.0 0.0 1.0 0.0 81.9 10.4 297 15.50 0.00 0.00 0.50 0.00 5.2 1.6 1.0 9.3 0.0 0.0 2.6 0.0 80.3 10.4 298 15.00 0.00 0.00 1.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 5.2 0.0 77.7 10.4 299 14.50 0.00 0.00 1.50 0.00 5.2 1.6 1.0 9.3 0.0 0.0 7.8 0.0 75.1 10.4 300 * 14.00 0.00 0.00 2.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 10.4 0.0 72.5 10.4 301 15.80 0.00 0.00 0.00 0.20 5.2 1.6 1.0 9.3 0.0 0.0 0.0 1.0 81.9 10.4 302 15.50 0.00 0.00 0.00 0.50 5.2 1.6 1.0 9.3 0.0 0.0 0.0 2.
80.3 10.4 303 15.00 0.00 0.00 0.00 1.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 5.2 77.7 10.4 304 14.50 0.00 0.00 0.00 1.50 5.2 1.6 1.0 9.3 0.0 0.0 0.0 7.8 75.1 10.4 305 * 14.00 0.00 0.00 0.00 2.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 10.4 72.5 10.4 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant amount [mol %] tan δ Is Hcj ρ ε No. Me(IV) D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 291 0.0 10.4 1.45 0.013 0.009 404 41 2 × 10
10 292 0.0 10.4 1.37 0.04
0.036 354 38 3 × 10
9 293 0.0 10.4 1.19 0.264 0.222 304 131 4 × 10
9 294 0.0 10.4 1.36 0.051 0.038 349 45 3 × 10
9 295 0.0 10.4 1.16 0.310 0.267 299 130 4 × 10
9 296 0.0 10.4 1.50 0.026 0.017 3
1 39 3 × 10
9 297 0.0 10.4 1.56 0.033 0.021 352 32 4 × 10
9 298 0.0 10.4 2.49 0.101 0.041 306 20 4 × 10
10 299 0.0 10.4 1.98 0.118 0.060 306 15 3 × 10
16 300 0.0 10.4 1.
1 0.254 0.168 199 11 1 × 10
25 301 0.0 10.4 1.53 0.016 0.010 379 36 3 × 10
9 302 0.0 10.4 1.60 0.021 0.013 345 33 4 × 10
9 303 0.0 10.4 2.50 0.144 0.057 303 18 4 × 10
10 304 0.0 10.4 2.01 0.116 0.058 256 12 2 × 10
16 305 0.0 10.4 1.54 0.310 0.202 201 8 9 × 10
24
indicates data missing or illegible when filed
[0362] The composition, magnetic properties, and the like of the composition formula SrCa.sub.0.3Co.sub.0.2Me.sub.1.8Fe.sub.2mO.sub.27-δ are shown in Table 17.
TABLE-US-00017 TABLE 17 Composition formula: SrCa.sub.0 Co.sub.0.2Me
Fe
O.sub.27-
Composition formula [mol] Composition ratio Composite composition Fe [mol %] amount [mol %] No. Mg Mn Ni Zn m Sr Ca Co Mg Mn Ni Zn Fe Me(II) Me(IV) 306 * 1.80 0.00 0.00 0.00 6.50 6.1 1.8 1.2 11.0 0.0 0.0 0.0 79.8 12.3 0.0 307 1.80 0.00 0.00 0.00 7.00 5.8 1.7 1.2 10.4 0.0 0.0 0.0 80.9 11.6 0.0 308 1.80 0.00 0.00 0.00 8.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 82.9 10.4 0.0 309 1.80 0.00 0.00 0.00 8.50 4.9 1.5 1.0 8.9 0.0 0.0 0.0 83.7 9.9 0.0 310 * 1.80 0.00 0.00 0.00 9.00 4.7 1.4 0.9 8.
0.0 0.0 0.0 84.5 9.4 0.0 311 * 0.00 1.80 0.00 0.00 6.50 6.1 1.
1.2 0.0 11.0 0.0 0.0 79.8 12.3 0.0 312 0.00 1.80 0.00 0.00 7.00 5.8 1.7 1.2 0.0 10.4 0.0 0.0 80.9 11.6 0.0 313 0.00 1.80 0.00 0.00 8.00 5.2 1.6 1.0 0.0 9.3 0.0 0.0 82.9 10.4 0.0 314 0.00 1.80 0.00 0.00 8.50 4.9 1.5 1.0 0.0 8.9 0.0 0.0 83.7 9.9 0.0 315 * 0.00 1.80 0.00 0.00 9.00 4.7 1.4 0.9 0.0 8.5 0.0 0.0 84.5 9.4 0.0 316 * 0.00 0.00 1.80 0.00 6.50 6.1 1.
1.2 0.0 0.0 11.0 0.0 79.8 12.3 0.0 317 0.00 0.00 1.80 0.00 7.00 5.8 1.7 1.2 0.0 0.0 10.4 0.0 80.9 11.6 0.0 318 0.00 0.00 1.80 0.00 8.00 5.2 1.
1.0 0.0 0.0 9.3 0.0 82.9 10.4 0.0 319 0.00 0.00 1.80 0.00 8.50 4.9 1.5 1.0 0.0 0.0 8.9 0.0 83.7 9.9 0.0 320 * 0.00 0.00 1.80 0.00 9.00 4.7 1.4 0.9 0.0 0.0 8.5 0.0 84.5 9.4 0.0 321 * 0.00 0.00 0.00 1.80 6.50
.1 1.8 1.2 0.0 0.0 0.0 11.0 79.8 12.3 0.0 322 0.00 0.00 0.00 1.80 7.00 5.8 1.7 1.2 0.0 0.0 0.0 10.4 80.9 11.6 0.0 323 0.00 0.00 0.00 1.80 8.00 5.2 1.8 1.0 0.0 0.0 0.0 9.3 82.9 10.4 0.0 324 0.00 0.00 0.00 1.80 8.50 4.9 1.5 1.0 0.0 0.0 0.0 8.9 83.7 9.9 0.0 325 * 0.00 0.00 0.00 1.80 9.00 4.7 1.4 0.9 0.0 0.0 0.0 8.5 84.5 9.4 0.0 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant amount [mol %] tan δ Is Hcj ρ ε No. D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 305 12.3 1.48 0.198 0.134 311 121 1 × 10.sup.7 79 307 11.6 1.78 0.101 0.057 313 39 8 × 10.sup.7 3
308 10.4 1.89 0.09
0.049 316 23 5 × 10.sup.7 33 309 9.9 1.67 0.101 0.060 349 32 3 × 10.sup.6 34 310 9.4 1.20 0.312 0.260 378 102 2 × 10.sup.8 61 311 12.3 1.14 0.089 0.078 379 123 1 × 10.sup.7 64 312 11.6 1.33 0.048 0.036 381 39 8 × 10.sup.7 40 313 10.4 1.62 0.012 0.007 387 33 5 × 10.sup.7 31 314 9.9 1.49 0.078 0.052 406 32 3 × 10
45 315 9.4 1.22 0.297 0.243 419 106 2 × 10
64 316 12.3 1.10 0.122 0.111 281 157 1 × 10.sup.7 94 317 11.6 1.30 0.077 0.059 283 94 8 × 10.sup.7 51 318 10.4 1.3
0.078 0.057 284 87 5 × 10.sup.7 32 319 9.9 1.29 0.078 0.060 304 95 3 × 10
61 320 9.4 1.08 0.315 0.292 315 122 2 × 10
105 321 12.3 1.11 0.167 0.150 359 119 1 × 10.sup.7 67 322 11.6 1.35 0.051 0.03
388 55 8 × 10.sup.7 3
323 10.4 1.44 0.026 0.018 391 47 5 × 10.sup.7 33 324 9.9 1.36 0.067 0.049 409 57 3 × 10.sup.8 37 325 9.4 1.09 0.254 0.233 418 112 2 × 10
5
indicates data missing or illegible when filed
[0363] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Co.sub.0.2Ni.sub.1.8+2xMe.sub.xFe.sub.16-3xO.sub.27-δ are shown in Table 18.
TABLE-US-00018 TABLE 18 Composition formula: BaCa Co
Ni
M
Fe
O
Composition formula [mol] Me (V) element Composition ratio Composite composition M
N
S
W V [mol %] amount [mol %] No. x x x x x Ba Ca Co Ni Mo Nb + Ta S
W V Fe Me(II) 326 0.00 0.00 0.00 0.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 0.0 0.0 82.9 10.4 327 0.50 0.00 0.00 0.00 0.00 5.2 1.6 1.0 14.5 2.6 0.0 0.0 0.0 0.0 75.1 15.5 328 * 1.00 0.00 0.00 0.00 0.00 5.2 1.6 1.0 19.7 5.2 0.0 0.0 0.0 0.0 67.4 20.7 329 0.00 0.50 0.00 0.00 0.00 5.2 1.6 1.0 14.5 0.0 2.6 0.0 0.0 0.0 7
.1 1
.5 330 * 0.00 1.00 0.00 0.00 0.00 5.2 1.6 1.0 19.7 0.0 5.2 0.0 0.0 0.0 67.4 20.7 331 0.00 0.00 0.50 0.00 0.00 5.2 1.6 1.0 14.5 0.0 0.0 2.6 0.0 0.0 75.1 15.5 332 * 0.00 0.00 1.00 0.00 0.00 5.2 1.6 1.0 19.7 0.0 0.0 5.2 0.0 0.0 67.4 20.7 333 0.00 0.00 0.00 0.50 0.00 5.2 1.6 1.0 14.5 0.0 0.0 0.0 2.6 0.0 75.1 15.5 334 * 0.00 0.00 0.00 1.00 0.00 5.2 1.6 1.0 19.7 0.0 0.0 0.0 5.2 0.0
7.4 20.7 335 0.00 0.00 0.00 0.00 0.50 5.2 1.6 1.0 14.5 0.0 0.0 0.0 0.0 2.
75.1 1
.5 336 * 0.00 0.00 0.00 0.00 1.00 5.2 1.6 1.0 19.7 0.0 0.0 0.0 0.0 5.2 67.4 20.7 Magnetization curve Magnetic permeability Saturation Specific Dielectric Composite composition at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant amount [mol %] tan δ Is Hcj ρ ε No. Me(IV) Me(V) D μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 326 0.0 0.0 10.4 1.38 0.04
0.033 2
7 92 2 × 10
10 327 0.0 2.6 10.4 1.31 0.07
0.056 274
4 3 × 10
9 328 0.0 5.2 10.4 1.09 0.240 0.220 254 211 4 × 10
76 329 0.0 2.6 10.4 1.29 0.068 0.0
3 277 95 3 × 10
9 330 0.0 5.2 10.4 1.0
0.344 0.31
2
2 2
2
× 10
8 331 0.0 2.6 10.4 1.31 0.071 0.0
4 278 89 3 × 10
9 332 0.0 5.2 10.4 1.07 0.221 0.207 255 204 2 × 10
1 333 0.0 2.6 10.4 1.29 0.0
0.0
3 279 91 3 × 10
9 334 0.0 5.2 10.4 1.06 0.115 0.106 258 224 1 × 10
59 335 0.0 2.6 10.4 1.1
0.0
0.0
6 275
2 3 × 10
9 336 0.0 5.2 10.4 0.97 0.744 0.767 150 345 8 × 10
84
indicates data missing or illegible when filed
[0364] The composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Co.sub.0.2Ni.sub.1.8Li.sub.xFe.sub.16-3xSn.sub.2xO.sub.27-δ are shown in Table 19.
TABLE-US-00019 TABLE 19 Composition formula: BaCa.sub.0.3Co.sub.0.2Ni.sub.1.8Li.sub.xFe.sub.16-3xSn.sub.2 O.sub.27-
Composition formula [mol] Composition ratio Composite composition Li [mol % ] amount [mol %] No. x Ba Ca Co Ni Li Sn Fe Me(I) Me(II) Me(IV) D 337 0.00 5.2 1.6 1.0 9.3 0.0 0.0 82.9 0.0 10.4 0.0 10.4 338 0.50 5.2 1.6 1.0 9.3 2.6 5.2 75.1 2.6 10.4 5.2 7.8 339 * 1.00 5.2 1.6 1.0 9.3 5.2 10.4 67.4 5.2 10.4 10.4 5.2 Magnetization curve Magnetic permeability Saturation Specific Dielectric at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant tan δ Is Hcj ρ ε No. μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 337 1.38 0.046 0.033 297 92 2 × 10
10 338 2.01 0.061 0.030 279 85 3 × 10
9 339 1.49 0.180 0.121 251 204 4 × 10.sup.4 65
indicates data missing or illegible when filed
[0365] The composition, magnetic properties, and the like of the composition formula (Ba.sub.1-xLa.sub.x)Ca.sub.0.3(Co.sub.0.2Ni.sub.1.8Li.sub.0.5x)Fe.sub.16-0.5xO.sub.27-δ are shown in Table 20.
TABLE-US-00020 TABLE 20 Composition formula: (Ba La.sub.x)Ca.sub.0.3(Co.sub.0.2Ni.sub.1.8Li
)Fe.sub.16-
.sub.xO.sub.27-
Composition formula Composition ratio [mol] [mol %] Composite composition La Li Ba La Li amount [mol %] No. x 0.5x 1-x Ca Co Ni x 0.5x Fe Me(I) Me(II) Me(IV) D 340 0.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 82.9 0.0 10.4 0.0 10.4 341 0.20 0.10 4.1 1.6 1.0 9.3 1.0 0.5 82.4 0.5 10.4 0.0 10.9 342 0.40 0.20 3.1 1.6 1.0 9.3 2.1 1.0 81.9 1.0 10.4 0.0 11.4 343 * 0.50 0.25 2.6 1.6 1.0 9.3 2.6 1.3 81.6 1.3 10.4 0.0 11.7 Magnetization curve Magnetic permeability Saturation Specific Dielectric at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant tan δ Is Hcj ρ ε No. μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 340 1.38 0.046 0.033 297 92 2 × 10
10 341 1.83 0.050 0.027 294 78 2 × 10
10 342 1.71 0.060 0.035 284 89 1 × 10
12 343 1.56 0.150 0.096 251 201 1 × 10
75
indicates data missing or illegible when filed
[0366] The composition, magnetic properties, and the like of the composition formula (Ba.sub.1-xMe.sub.x)Ca.sub.0.3Co.sub.0.2Ni.sub.1.8(Fe.sub.16-xSn.sub.x)O.sub.27-δ are shown in Table 21.
TABLE-US-00021 TABLE 21 Composition formula: (Ba Me.sub.x)Ca.sub.0.3Co.sub.0.2Ni
(Fe
Sn.sub.x)O.sub.27
Composition formula [mol] Composition ratio Me element [mol %] Composite composition amount Na K Ba Na K [mol %] No. x x
-x Ca Co Ni x x Sn Fe Me(I) Me(II) Me(IV) Me(V) D 344 0.00 0.00 5.2 1.6 1.0 9.3 0.0 0.0 0.0 82.9 0.0 10.4 0.0 0.0 10.4 345 0.50 0.00 2.6 1.6 1.0 9.3 2.6 0.0 2.6 80.3 2.6 10.4 2.6 0.0 10.4 346 1.00 0.00 0.0 1.6 1.0 9.3 5.2 0.0 5.2 77.7 5.2 10.4 5.2 0.0 10.4 347 0.00 0.50 2.6 1.6 1.0 9.3 0.0 2.8 2.6 80.3 2.6 10.4 2.6 0.0 10.4 348 0.00 1.00 0.0 1.6 1.0 9.3 0.0 5.2 5.2 77.7 5.2 10.4 5.2 0.0 10.4 Magnetization curve Magnetic permeability Saturation Specific Dielectric at 6 GHz μ = μ′ − iμ″ magnetization Coercivity resistance constant tan δ Is Hcj ρ ε No. μ′ μ″ μ″/μ′ [mT] [kA/m] [Ω .Math. m] 1 GHz 344 1.38 0.046 0.033 297 92 2 × 10
10 345 1.46 0.040 0.027 294 89 7 × 10.sup.7 14 346 1.58 0.050 0.032 291 94 5 × 10.sup.7 34 347 1.36 0.040 0.029 2
3 97 3 × 10.sup.7 16 348 1.29 0.050 0.039 289 86 4 × 10.sup.7 35
indicates data missing or illegible when filed
[0367] As shown in Tables 9 to 16 among Tables 5 to 21, when Fe is partly substituted with at least one of the nonmagnetic elements M.sub.2d=In, Sc, Sn, Zr, and Hf, substitution with which is likely to occur on the five-coordinate sites of the W-type hexagonal ferrite, the magnetic permeability can be greatly increased from the maximum value 2.12 in the case of not being substituted with the above elements to the maximum value 3.15 in the case of being substituted with the above elements.
[0368] On the other hand, when substitution with other nonmagnetic elements is performed, effects similar to those of Example 1 are obtained.
[0369] The frequency characteristics of the magnetic permeability μ in the composition formulas (Ba.sub.1-xSr.sub.x)Ca.sub.0.3Mn.sub.1.8Co.sub.0.2Fe.sub.16O.sub.27 (x=0 or 1.0) and (Ba.sub.1-yBi.sub.y)Ca.sub.0.3Mn.sub.1.8+yCo.sub.0.2Fe.sub.16-yO.sub.27 (y=0 or 0.2) are shown in
[0370] In
[0371] From
[0372] The frequency characteristics of the magnetic permeability μ and the magnetic loss tan δ in the composition formula BaCa.sub.0.3Mn.sub.1.8-xCu.sub.xCo.sub.0.2Fe.sub.16O.sub.27 (x=0 or 0.3) are shown in
[0373] In
[0374] From
[0375] The frequency characteristics of the magnetic permeability μ and the magnetic loss tan δ in the composition formula BaCa.sub.0.3Mn.sub.1.8-yNi.sub.yCo.sub.0.2Fe.sub.16O.sub.27 (y=0 or 0.9) are shown in
[0376] In
[0377] From
[0378] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.0.3Mn.sub.1.8-xCo.sub.0.2Zn.sub.xFe.sub.16O.sub.27 (x=0, 0.5, or 0.9) are shown in
[0379] In
[0380] As seen from
[0381] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.0.3Mn.sub.1.8+xCo.sub.0.2Fe.sub.16-2xMe.sub.xO.sub.27 (x=0 or 0.5, Me=Si or Ti) are shown in
[0382] In
[0383] From
[0384] The frequency characteristics of the magnetic permeability μ and the magnetic loss tan δ in the composition formula BaCa.sub.0.3Mn.sub.1.8+xCo.sub.0.2Fe.sub.16-2xZr.sub.xO.sub.27 (x=0 or 1) are shown in
[0385] In
[0386] As seen from
[0387] The magnetization curve in the composition formula BaCa.sub.0.3Mn.sub.1.8Co.sub.0.2Zn.sub.xSn.sub.xFe.sub.16-2x O.sub.27 (x=1.0, No. 174 in Table 10) is shown in
[0388] As seen from
[0389] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.0.3Mn.sub.1.8Co.sub.0.2Zn.sub.xSn.sub.xFe.sub.16-2xO.sub.27 (x=0, 1.0, or 2.0) are shown in
[0390] In
[0391] As seen from
[0392] As seen from
[0393] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.0.3Ni.sub.1.8Co.sub.0.2Fe.sub.16-xSc.sub.xO.sub.27 (x=0, 0.2, or 1.0) are shown in
[0394] In
[0395] As seen from
[0396] As seen from
[0397] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.0.3Zn.sub.1.8Co.sub.0.2Fe.sub.16-xSc.sub.xO.sub.27 (x=0, 0.5, or 1.0) are shown in
[0398] In
[0399] As seen from
[0400] As seen from
Example 3-1
[0401] A winding coil can be produced from the calcined powder prepared in Example 1 or Example 2.
[0402]
[0403] The winding coil 10 shown in
[0404] In a 500 cc pot made of polyester material, 80 g of the calcined powder of hexagonal ferrite prepared in Example 1 or 2, 60 to 100 g of pure water, 2 to 4 g of ammonium polycarboxylate as a dispersant, and 1000 g of 1 to 5 mmφ PSZ media are placed, and pulverized for 70 to 100 hours in a ball mill at a rotation speed of 100 to 200 rpm to obtain a slurry of finer particles. To the slurry of finer particles, 5 to 15 g of a binder having a molecular weight of 5000 to 30000 is added, and the mixture is dried with a spray granulator to obtain a granular powder. This powder is press-molded so as to form the core shape of the winding coil shown in
[0405] The workpiece is placed on a zirconia setter, and heated in the atmosphere at a temperature ramp rate of 0.1 to 0.5° C./min and a maximum temperature of 400° C. for a maximum temperature holding time of 1 to 2 hours to thermally decompose and remove the binder and the like, and then firing is performed in the atmosphere at a firing temperature selected from 900 to 1400° C. at which the magnetic loss component at 6 GHz is minimized at a temperature ramp rate of 1 to 5° C./min for a maximum temperature holding time of 1 to 10 hours (oxygen concentration: about 21%) to obtain a sintered body.
[0406] As shown in
[0407] In the case of an air-core coil in which the winding has three turns and a magnetic body coil in which the magnetic body sample of No. 174 in Table 10 is used as the winding core and the winding has two turns, the frequency characteristic of the inductance L are shown in
[0408] As seen from
[0409] As seen from
Example 3-2
[0410] The structure of the coil component is not limited to the winding coil, and the effect of high inductance L and high Q can be obtained also in a coil component such as a multilayer coil.
[0411]
[0412] The multilayer coil 20 shown in
[0413] A sheet is produced in the same manner as in Example 1, and a coil is printed on a portion of the sheet, and then a pressure-bonded body is produced. The pressure-bonded body is fired in the same manner as in Example 3-1 to obtain a sintered body. The surface of the sintered body is subjected to barrel finishing to expose both end portions of the electrode, and then external electrodes are formed and baked to produce a multilayer coil having the shape shown in
[0414]
[0415] A multilayer coil 20A shown in
[0416] In a 500 cc pot made of polyester material, 80 g of the calcined powder of hexagonal ferrite prepared in Example 1 or 2, 60 to 100 g of pure water, 2 to 4 g of ammonium polycarboxylate as a dispersant, and 1000 g of 1 to 5 mmφ PSZ media are placed, and pulverized for 70 to 100 hours in a ball mill at a rotation speed of 100 to 200 rpm to obtain a slurry of finer particles. To the slurry of finer particles, 5 to 15 g of a binder having a molecular weight of 5000 to 30000 is added, and by passing the slurry through a three-roll mill for pulverization, there is obtained a paste. This paste is poured into only the core portion 21A of the multilayer coil 20A shown in
[0417] The winding portion 21B of the multilayer coil 20A shown in
Example 4
[0418] The soft magnetic composition of the present invention can be used not only for coil component applications that function as inductors, but also for antenna applications that transmit and receive radio waves and that are required to have high magnetic permeability and low magnetic loss tan δ.
[0419]
[0420] In an antenna 30 shown in
[0421] The granular W-type hexagonal ferrite magnetic powder obtained by the spray granulator is press-molded into a ring shape to obtain a ring-shaped workpiece. The workpiece is placed on a zirconia setter, and heated in the atmosphere at a temperature ramp rate of 0.1 to 0.5° C./min and a maximum temperature of 400° C. for a maximum temperature holding time of 1 to 2 hours to thermally decompose and remove the binder and the like, and then firing is performed in the atmosphere at a firing temperature selected from 900 to 1400° C. at which the magnetic loss component at 6 GHz is minimized at a temperature ramp rate of 1 to 5° C./min for a maximum temperature holding time of 1 to 10 hours (oxygen concentration: about 21%) to obtain a ring-shaped magnetic body 31. A metal antenna wire 32 is passed through a hole of the ring-shaped magnetic body 31 to form an electric wire.
[0422]
[0423] In an antenna 40 shown in
Example 5
[0424] In a communication market such as 5G which is a mobile information communication standard, ETC, and Wi-Fi of a 5 GHz band, it is assumed to be used in a range of about 4 to 6 GHz, and there is also a noise filter application in which it is desired to protect a circuit from these signals. In the noise filter made of only a magnetic body, since the loss component of the magnetic permeability μ′ at 4 to 6 GHz is too low, there is a limit in achieving both noise absorption performance and miniaturization. By using the inductor of the present invention and forming an LC resonance circuit in combination with a capacitor, it is possible to enhance a noise absorption effect near a resonant frequency as compared with a noise filter using only a magnetic body, and it is possible to achieve both noise absorption performance and miniaturization.
Example 6
[0425] In the preparation method of Example 1, the composition, magnetic properties, and the like of the composition formula BaCa.sub.0.3Me.sub.2Fe.sub.16O.sub.27-δ (Me=Mn, Ni, or Zn) are shown in Table 22.
TABLE-US-00022 TABLE 22 Composition formula B C
M
Fe
O
M
M
N
Composition formula Composition ratio Magnetic permeability Magnetic permeability [mol] Me element [mol] [mol %] at 6 GHz μ = μ′ −
μ″ at 20 GHz
No B
Mg M
Ni Z
C
M
Ni Zn F
μ′ μ″
34
1.0 0.0 2.0 0.0 0.0
.2 1.6 10.4 0.0 0.0
2.9 1.2
0.0
1 0.0
1 1.21 0.001 0.001 1.2 350 1.0 0.0 0.0 2.0 0.0
.2 1.6 0.0 10.4 0.0
2.9 1.26 0.033 0.02
1.39 0.018 0.013 1.4 351 1.0 0.0 0.0 0.0 2.0
.2 1.6 0.0 0.0 10.4
2.9 1.27 0.012 0.010 1.57 0.
11 0.007 1.8 Magnetization curve Saturation Specific Dielectric Magnetic permeability Magnetic permeability
Coercivity resistance constant at 25 GHz
at 30 GHz
Is Hcj ρ ε No
[mT] [kA/m] [Ω .Math. m] 1
Hz 349 1.3
0.0
0.043 1.4 1.
3 0.402 0.20
2.0 370 44 2 × 10
3
350 1.
0.0
0.0
4 1.6 1.87 1.5
0.
2.4 2
2 1
2 × 10
3 351 2.1
0.273 0.130 2.1 0.
0.4
0.
2 1.0 38
69
× 10
33
indicates data missing or illegible when filed
[0426] The frequency characteristics of the magnetic permeability μ in the composition formula BaCa.sub.0.3Me.sub.2Fe.sub.16O.sub.27 (Me=Mn, Ni, or Zn) are shown in
[0427] In
[0428] As seen from
[0429] The frequency characteristic of the sum of squares of the magnetic permeability are shown in
[0430] In the communication market of the millimeter wave band of 5G, which is a mobile information communication standard, it is assumed to be used in a range of about 24 to 86 GHz, and there are also noise filter and radio wave absorber applications in which it is desired to protect a circuit from these signals. In the conventional magnetic body, since the loss component μ″ of the magnetic permeability at 24 to 40 GHz is too low, there is a limit in achieving both noise absorption performance and miniaturization. By using the magnetic body of the present invention, it is possible to achieve both noise absorption performance at 24 to 30 GHz, which is a part of the millimeter wave band, and miniaturization, and the magnetic body can be used for a noise filter and a radio wave absorber applications.
DESCRIPTION OF REFERENCE SYMBOLS
[0431] 10: Winding coil [0432] 11: Core (magnetic body) [0433] 12: Conductive wire [0434] 13: Body portion [0435] 14, 15: Projecting portion [0436] 16, 17: Terminal electrode [0437] 20, 20A: Multilayer coil [0438] 21: Magnetic body [0439] 21A: Core portion [0440] 21B: Winding portion [0441] 22: Through hole [0442] 23: Coil-shaped internal electrode [0443] 24, 25: External electrode [0444] 30, 40: Antenna [0445] 31, 41: Magnetic body [0446] 32, 42: Metal antenna wire