粉体および粉末冶金
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
研究論文
W, La添加Sm2Fe17N3粉末の磁気特性と微細組織
松浦 昌志鈴木 志歩山本 邦子手束 展規杉本 諭
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2020 年 67 巻 12 号 p. 682-687

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The magnetic properties and microstructure of the W and/or La added Sm-Fe-N magnetic powders were investigated. The W and La+W added Sm-Fe-N powders exhibited higher coercivity of 2.1 and 2.0 MAm-1 than that of the powder without La and W addition (1.5 MAm-1), respectively, while the La added powder had lower coercivity of 1.0 MAm-1. Initial recoil curves of each powders indicated that volume fraction of single domain particles was higher in the W and La+W added powders than in the La added powder, and the coercivity of these powders strongly depended on particles size. The lattice constant slightly changed with La and W addition. Microstructural observation revealed that W tended to condense in the small particle, and the W was detected from Sm2Fe17N3(01̄1) plane.

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