Transmission electron microscopy study on the grain boundaries and magnetic domains in Nd-Fe-B based magnets

Kohei Sato, Yasukazu Murakami, Daisuke Shindo, Satoshi Hirosawa, Akira Yasuhara

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The effect of post-sintering heat treatment on the coercivity of Nd-Fe-B based permanent magnets was studied by observing their crystallographic and magnetic microstructures. High-resolution transmission electron microscopy revealed meandering grain boundaries in die as-sintered state, and the smoothness of the boundaries was improved by the post-sintering heat treatment. Electron holography demonstrated that magnetization reversal occurred in a stepwise manner in individual grains in the specimen subjected to the post-sintering heat treatment, whereas reversal was occurred simultaneously in different grains in the as-sintered specimen.

本文言語English
ページ(範囲)333-340
ページ数8
ジャーナルMaterials Transactions
51
2
DOI
出版ステータスPublished - 2010 2
外部発表はい

ASJC Scopus subject areas

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

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