Magnetic material and method for producing same

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United States of America Patent

PATENT NO 11732336
APP PUB NO 20200265976A1
SERIAL NO

16648269

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Abstract

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Provided are: a novel magnetic material having high magnetic stability, in particular, having an extremely high saturation magnetization; and a method for producing the same, wherein the magnetic material, due to having a higher saturation magnetization than ferrite magnetic materials and a higher electrical resistivity than existing metallic magnetic materials, resolves problems such as eddy current loss. According to the present invention, Co-ferrite nanoparticles obtained by wet synthesis are reduced in hydrogen and subjected to grain growth, and bcc- or fcc-(Fe, Co) phases and Co-enriched phases are nano-dispersed using phase separation via a disproportionation reaction to prepare a magnetic material powder. In addition, the magnetic material powder is sintered into a solid magnetic material.

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Patent Owner(s)

Patent OwnerAddress
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Imaoka, Nobuyoshi Nagoya, JP 17 114
Ozaki, Kimihiro Nagoya, JP 21 58
Yamamoto, Shinpei Nagoya, JP 19 61

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