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Thin-film rare-earth magnets and manufacturing method thereof 发明授权

2023-03-19 3170 1147K 0

专利信息

申请日期 2025-07-14 申请号 JP2018504386
公开(公告)号 JP6395969B2 公开(公告)日 2018-09-26
公开国别 JP 申请人省市代码 全国
申请人 JX金属株式会社
简介 A rare-earth thin film magnet is provided which includes Nd, Fe and B as essential components, characterized by including a Si substrate having an oxide film present on a surface thereof, a Nd base film formed as a first layer over the Si substrate, and a Nd—Fe—B film formed as a second layer on the first layer. The rare earth thin film magnet and a production process therefor provides a rare earth thin film magnet suffering neither film separation nor substrate breakage and having satisfactory magnetic properties even when the second layer has composition in the range of 0.120 ≤Nd/(Nd+Fe)<0.150, which corresponds to a compositional range in the vicinity of a stoichiometric composition.


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