A coil component includes: a magnetic body part and a cover part covering one side of a magnetic layer part; and a coil part embedded in the magnetic body part. The magnetic body part is comprised of the following two types of layers: (A) an oblate soft magnetic grain-containing layer, and (B) a spherical grain-containing layer, wherein layer (A) extends over the entire range of the magnetic body part except for a portion including the coil part in a direction perpendicular to an axis direction of the coil part, layer (B) adjoins layer (A) in the axis direction. The cover part is constituted by multiple layers including one or more of layer(s) (A) and one or more of layer(s) (B) and extending over the entire range of the magnetic body part in the direction perpendicular to the axis direction.

A coil component includes: a laminate including a magnetic portion and an insulator, the insulator having a higher insulation quality than the magnetic portion; a first external electrode; a second external electrode; and a coil conductor provided in the laminate, wherein the coil conductor includes a plurality of conductor patterns each extending along a planar direction perpendicular to the coil axis, the plurality of conductor patterns being separated from each other in the direction of the coil axis, the plurality of conductor patterns include a first conductor pattern and a second conductor pattern, the first conductor pattern contacting with the first external electrode, the second conductor pattern contacting with the second external electrode, and in the planar direction, the insulator is provided between the first conductor pattern and the second external electrode and between the second conductor pattern and the first external electrode.

The soft magnetic alloy of the present disclosure is represented by a composition formula of Fe.sub.aSi.sub.bB.sub.cCu.sub.dM.sub.e where M is at least one type of element selected from a group consisting of Nb, Mo, V, Zr, Hf, and W, and the formula satisfies 82.5≤a≤86, 0.3≤b≤3, 12.5≤c≤15.0, 0.05≤d≤0.9, and 0≤e<0.4 in at %. The soft magnetic alloy includes a structure that has a crystal grain with a grain diameter of 60 nm or less in an amorphous phase.

A non-oriented electrical steel sheet is provided which has a chemical composition that contains, in mass%, C: 0.0050% or less, Si: 0.10 to 1.50%, Mn: 0.10 to 1.50%, sol. Al: 0.0050% or less, N: 0.0030% or less, S: 0.0040% or less, and O: 0.0050 to 0.0200%, and contains one or more elements selected from a group of La, Ce, Zr, Mg and Ca in a total amount of 0.0005 to 0.0200%, with the balance being Fe and impurities. A number density N of suitable oxide particles is 3.0×10.sup.3 to 10×10.sup.3 particles/cm.sup.2, and a number density n of oxide particles containing La and the like satisfies the expression n/N≥0.01.

A metal magnetic particle provided with an oxide layer on a surface of an alloy particle containing Fe and Si. The oxide layer has a first oxide layer, a second oxide layer, and a third oxide layer from a side of the alloy particle. All of the first oxide layer, the second oxide layer, and the third oxide layer contain Si. Also, in line analysis of element content by using a scanning transmission electron microscope-energy dispersive X-ray spectroscopy, the first oxide layer is a layer having Fe content smaller than Si content in the alloy particle, the second oxide layer is a layer having Fe content larger than the Si content in the alloy particle, and the third oxide layer is a layer having Fe content smaller than the Si content in the alloy particle.

Provided is a technique that can achieve both magnetic properties and machinability by cutting at a high level, which has been impossible with only the conventional techniques of improving the machinability by cutting using MnS or the like. A soft magnetic iron comprises a chemical composition containing, in mass %, C: 0.02% or less, Si: 0.15% or less, Mn: 0.01% or more and 0.50% or less, P: 0.002% or more and 0.020% or less, S: 0.001% or more and 0.050% or less, Al: 0.05% or less, N: 0.0100% or less, and Se: 0.001% or more and 0.30% or less, with a balance consisting of iron and inevitable impurities.

A coil component includes: a magnetic base body including a plurality of soft magnetic metal particles that contain Fe and Si, and an oxide film provided on the surface of each of the plurality of soft magnetic metal particles; and a coil conductor provided in the magnetic base body. The oxide film contains an oxide of Si and an oxide of element A (wherein the element A is at least one selected from the group consisting of Cr and Al). Each soft magnetic metal particle is divided into a central region and a surface region radially outward of the central region. The surface region contains a higher atomic proportion of Si than the central region. The soft magnetic metal particles include first soft magnetic metal particles that include Si—O precipitates separated from each other in the surface region.

A coil component according to one aspect of the present invention includes: a coil conductor extending around a coil axis; and a magnetic base body intersecting the coil axis. The magnetic base body includes first metal magnetic particles, second metal magnetic particles, and magnetic gap portions, each of the first metal magnetic particles having a first elastic limit and a first relative permeability, each of the second metal magnetic particles having a second elastic limit smaller than the first elastic limit and a second relative permeability lower than the first relative permeability, each of the magnetic gap portions covering a surface of associated one of the first metal magnetic particles and configured such that a first thickness of the magnetic gap portion in a first direction along the coil axis is larger than a second thickness of the magnetic gap portion in a second direction perpendicular to the first direction.

Provided is an amorphous alloy soft magnetic powder having a composition represented by the following formula: (Fe.sub.xCo.sub.(1−x)).sub.(100−(a+b))(Si.sub.yB.sub.(1−y)) .sub.aM.sub.b, [where M is at least one selected from the group consisting of C, S, P, Sn, Mo, Cu, and Nb, 0.73≤x≤0.85, 0.02 ≤y≤0.10, 13.0 ≤a≤19.0, and 0≤b≤2.0], in which a coercive force is 24 [A/m] or more (0.3 [Oe] or more) and 199 [A/m] or less (2.5 [Oe] or less), and a saturation magnetic flux density is 1.60 [T] or more and 2.20 [T] or less.

A magnetic base body is constituted by: metal magnetic grains containing Fe, and Si as an optional component, where the total content of the Fe and Si is 99% by mass or higher; and oxide layers present between the metal magnetic grains; wherein the ratio (I.sub.Fe2SiO4/I.sub.Fe) of the strongest diffraction line intensity (I.sub.Fe2SiO4) observed in a range of 30.8°≤2θ≤32.2° to the strongest diffraction line intensity (I.sub.Fe) observed in a range of 43.8°≤2θ≤45.2° in X-ray diffraction measurement using the CuKα ray is 0.0020 or higher; and the ratio (I.sub.Fe2O3/I.sub.Fe) of the strongest diffraction line intensity (I.sub.Fe2O3) observed in a range of 33.0°≤2θ≤34.4° to the I.sub.Fe in X-ray diffraction measurement using the CuKα ray is lower than 0.0010.