Alignment and angular dependences of coercivity for (Sm,Ce)2(Co,Fe,Cu,Zr)17 magnets

Yutaka Matsuura, Ryuji Tamura, Keisuke Ishigami, Kazushi Sumitani, Kentaro Kajiwara, Tetsuya Nakamura

研究成果: Article査読

抄録

The alignment and angular dependences of the coercivity of (Sm, Ce)2(Co, Fe, Cu, Zr)17 magnets were investigated. The coercivity of an aligned magnet is slightly larger than that of the isotropically aligned magnet. This result differs from those of Nd-Fe-B sintered magnets and ferrite magnets. In regard to the angular dependence, the coercivity of (Sm, Ce)2(Co, Fe, Cu, Zr)17 magnets decreases from 0° to 40° and increases thereafter. The trend is similar to that observed in Ga-doped Nd-Fe-B sintered magnets and ferrite magnets and reproduces those expected from a Stoner-Wohlfarth model or a coherent rotation of magnetization, even though the magnetization reversals for these magnets proceed through the motion of magnetic domain walls. The angular dependence of the coercivity of isotropically aligned magnets agrees well with the calculation results for angles up to 50° obtained under the assumption that the magnetization of every grain reverses independently through the motion of magnetic domain walls. These results support strongly the conclusion that the coercivity of Ga-doped Nd-Fe-B sintered magnets and ferrite magnets, both which have an angular dependence similar to (Sm, Ce)2(Co, Fe, Cu, Zr)17 magnets, is determined by the motion of magnetic domain walls.

本文言語English
ページ(範囲)1009-1012
ページ数4
ジャーナルMaterials Transactions
62
7
DOI
出版ステータスPublished - 2021

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

フィンガープリント

「Alignment and angular dependences of coercivity for (Sm,Ce)<sub>2</sub>(Co,Fe,Cu,Zr)<sub>17</sub> magnets」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。

引用スタイル