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.

Provided is a new magnetic material with high magnetic stability, as well as a manufacturing method therefor, said magnetic material having a higher saturation magnetization than ferrite-based magnetic materials, and having a higher electrical resistivity than existing metal-based magnetic materials, thus solving problems such as that of eddy current loss. Ti-ferrite nanoparticles obtained through wet synthesis are reduced within hydrogen, and grains are allowed to grow while simultaneously using a phase separation phenomenon due to a disproportionation reaction to produce a magnetic material powder in which an α-(Fe, Ti) phase and a Ti-enriched phase are nano-dispersed. This powder is then sintered to produce a solid magnetic material.

Provided is a new magnetic material with high magnetic stability, as well as a manufacturing method therefor, said magnetic material having a higher saturation magnetization than ferrite-based magnetic materials, and having a higher electrical resistivity than existing metal-based magnetic materials, thus solving problems such as that of eddy current loss. Ti-ferrite nanoparticles obtained through wet synthesis are reduced within hydrogen, and grains are allowed to grow while simultaneously using a phase separation phenomenon due to a disproportionation reaction to produce a magnetic material powder in which an α-(Fe, Ti) phase and a Ti-enriched phase are nano-dispersed. This powder is then sintered to produce a solid magnetic material.

Magnetic layers of the multilayer coil component are constituted by: soft magnetic alloy grains 21 containing Fe, Si, and at least one of Cr and Al, as constituent elements; and an oxide layer 22 formed around the soft magnetic alloy grains to bond the soft magnetic alloy grains together, and also containing Si as well as at least one of Cr and Al as constituent elements, where the content of Si based on mass is higher than the total content of Cr and Al. The multilayer coil component can have a small thickness and offer excellent magnetic properties.

Magnetic layers of the multilayer coil component are constituted by: soft magnetic alloy grains 21 containing Fe, Si, and at least one of Cr and Al, as constituent elements; and an oxide layer 22 formed around the soft magnetic alloy grains to bond the soft magnetic alloy grains together, and also containing Si as well as at least one of Cr and Al as constituent elements, where the content of Si based on mass is higher than the total content of Cr and Al. The multilayer coil component can have a small thickness and offer excellent magnetic properties.

The present disclosure relates to a magnetic shielding sheet and a method of preparation thereof. The magnetic shielding sheet includes a magnetic layer, and a protective layer disposed on at least one surface of the magnetic layer. The magnetic layer includes a metal-ceramic composite that is metal powder, on which a ceramic coating layer is formed.

Provided is an FePt based magnetic material sintered compact, comprising BN and SiO.sub.2 as non-magnetic materials, wherein Si and O are present in a region where B or N is present at a cut surface of the sintered compact. A high density sputtering target is provided which enables production of a magnetic thin film for heat-assisted magnetic recording media, and also reduces the amount of particles generated during sputtering.

Provided is an FePt based magnetic material sintered compact, comprising BN and SiO.sub.2 as non-magnetic materials, wherein Si and O are present in a region where B or N is present at a cut surface of the sintered compact. A high density sputtering target is provided which enables production of a magnetic thin film for heat-assisted magnetic recording media, and also reduces the amount of particles generated during sputtering.

The present invention pertains to: a powder mixture for powder magnetic core obtained by mixing a lubricant, a solid lubricant, and a soft magnetic powder coated with an insulating coating, wherein a lubricant content is 0.1% by mass or more and 0.8% by mass and a solid lubricant content is 0.01% by mass or more and 0.2% by mass or less; and a powder magnetic core in which the powder mixture is used.

The present invention pertains to: a powder mixture for powder magnetic core obtained by mixing a lubricant, a solid lubricant, and a soft magnetic powder coated with an insulating coating, wherein a lubricant content is 0.1% by mass or more and 0.8% by mass and a solid lubricant content is 0.01% by mass or more and 0.2% by mass or less; and a powder magnetic core in which the powder mixture is used.