Interaction between magnetic domain walls and antiphase boundaries in Ni2Mn(Al,Ga) studied by electron holography and Lorentz microscopy

T. Yano, Y. Murakami, R. Kainuma, D. Shindo

研究成果: Contribution to journalArticle査読

15 被引用数 (Scopus)

抄録

The magnetization distribution in the L21 phase of a Ni 2Mn(Al,Ga) alloy, which is a type of ferromagnetic shape memory alloy, has been studied by electron holography and Lorentz microscopy. This alloy contains many antiphase boundaries (APBs), which are introduced by the chemical ordering from the B2 state to the L21 state. In situ Lorentz microscopy observations have revealed that APBs behave as strong pinning sites for domain wall motion. The width of a 180° wall, which was formed at the position of an APB, was estimated to be approximately 10 nm. This narrow domain wall was rationalized by the depression of ferromagnetism within APBs.

本文言語英語
ページ(範囲)2636-2641
ページ数6
ジャーナルMaterials Transactions
48
10
DOI
出版ステータス出版済み - 10 2007
外部発表はい

All Science Journal Classification (ASJC) codes

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

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