Metastable single-crystal rare earth magnet fine powder and method for producing same

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United States of America Patent

PATENT NO 12121963
APP PUB NO 20220148771A1
SERIAL NO

17438690

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Abstract

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A single crystal particle powder having a crystal structure of TbCu7-type of the present invention is represented by the general formula:

description='In-line Formulae' end='lead'[Chemical Formula 1]description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'(R1-zMz)Tx  (1)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'or the general formula:description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'[Chemical Formula 2]description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'(R1-zMz)TxNy  (2)description='In-line Formulae' end='tail'

and has a crystal structure of TbCu7-type,

wherein R is at least one element selected from the group consisting of Sm and Nd, T is at least one element selected from the group consisting of Fe and Co, x is 7.0≤x≤10.0, y is 1.0≤y≤2.0, and z is 0.0≤z≤0.3.

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Patent Owner(s)

Patent OwnerAddress
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYCHIYODA-KU TOKYO 100-8921

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirayama, Yusuke Aichi, JP 19 594
Hosokawa, Akihide Aichi, JP 1 0
Takagi, Kenta Aichi, JP 16 14

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