The effect of Zr substitution on saturation magnetization in (Sm1-xZrx)(Fe0.8Co0.2)12 compound with the ThMn12 structure

P. Tozman, Y. K. Takahashi*, H. Sepehri-Amin, D. Ogawa, S. Hirosawa, K. Hono

*この研究の対応する著者

研究成果: Article査読

13 被引用数 (Scopus)

抄録

Zr is one of the essential elements to stabilize the ThMn12 structure in rare earth (R) transition metal (M) hard magnetic compounds, RM12. In this work, the effects of Zr on the intrinsic hard magnetic properties of (Sm1-x Zrx)(Fe0.8Co0.2)12 compounds are investigated using epitaxially grown thin films. The increase of Zr substitution for Sm from x = 0 to 0.26 for (Sm1-x Zrx)(Fe0.8Co0.2)12 increases saturation magnetization (μ0Ms) from 1.78 T to 1.90 T, the highest value reported for hard magnetic compounds. The largest μ0Ha and Tc for Zr-doped samples were found to be 9.8 T and 671 K for x = 0.18 which is superior to those for Nd2Fe14B. Sm-rich Sm1.30Zr0.27(Fe0.8Co0.2)12, obtained as sub-μm thick films, has remanence, μ0Mr of 1 T, which appears to be useful for near-field applications such as micro-electro-machines and magnetic recording media if microstructure can be optimized to obtain a sufficient coercivity.

本文言語English
ページ(範囲)114-121
ページ数8
ジャーナルActa Materialia
178
DOI
出版ステータスPublished - 2019 10 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • ポリマーおよびプラスチック
  • 金属および合金

フィンガープリント

「The effect of Zr substitution on saturation magnetization in (Sm<sub>1-x</sub>Zr<sub>x</sub>)(Fe<sub>0.8</sub>Co<sub>0.2</sub>)<sub>12</sub> compound with the ThMn<sub>12</sub> structure」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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