SM-FE-N-BASED MAGNET POWDER, SM-FE-N-BASED SINTERED MAGNET, AND PRODUCTION METHOD THEREFOR

WIPO Patent Application WO/2020/203739

A1

Provided are an Sm-Fe-N-based magnet powder and an Sm-Fe-N-based sintered magnet which exhibit high holding power while degradation of saturation magnetization is effectively reduced or prevented. The Sm-Fe-N-based magnet powder contains a powder of an Sm-Fe-N-based magnetic material, wherein the average grain size of the powder is 5 µm or less and the full width at half maximum of a diffraction peak of a (200) plane in an X-ray diffraction profile is 0.0033 Å or less. The Sm-Fe-N-based sintered magnet contains a sintered body of the Sm-Fe-N-based magnetic material, wherein the average grain size of crystal grains of the Sm-Fe-N-based magnetic material is 5 µm or less and the full width at half maximum of a diffraction peak of a (200) plane in an X-ray diffraction profile is 0.0033 Å or less.

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TAKAGI KENTA (JP)
YAMAGUCHI WATARU (JP)
YOKOYAMA TAKAAKI (JP)
YAMAGATA RYOICHI (JP)
SATO YOSUKE (JP)

PCT/JP2020/013947

October 08, 2020

March 27, 2020

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AIST (JP)
MURATA MANUFACTURING CO (JP)

B22F1/052; B22F3/10; C22C38/00; H01F1/059; H01F41/02

WO2018163967A1

2018-09-13

JP2017055072A	2017-03-16
JP2015005550A	2015-01-08

YAMAO, Norihito et al. (JP)

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