Electron holography studies on narrow magnetic domain walls observed in a heusler alloy Ni 50Mn 25Al 12.5Ga 12.5

Hyun Soon Park, Yasukazu Murakami, Keiichi Yanagisawa, Tsuyoshi Matsuda, Ryosuke Kainuma, Daisuke Shindo, Akira Tonomura

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Peculiar magnetic domain walls produced in Heusler alloys, which have attracted renewed interest due to their potential application to actuators and spintronic devices, are studied here using electron holography. The observations reveal unexpectedly narrow magnetic domain walls, the width of which showed perfect agreement with that of the antiphase boundaries (APB, e.g., only 3 nm). While the results can be explained by the significant depression of ferromagnetism due to the local chemical disorder, the electron phase shift indicates that ferromagnetic correlation still remains in the APB region. Peculiar magnetic domain walls produced in a Heusler alloy are studied using electron holography. The observations reveal unexpectedly narrow magnetic domain walls, the width of which shows perfect agreement with that of the antiphase boundaries (e.g., only 3 nm). This method provides beneficial information for obtaining a deeper understanding of the magnetic order in the vicinity of an interface.

本文言語English
ページ(範囲)3434-3437
ページ数4
ジャーナルAdvanced Functional Materials
22
16
DOI
出版ステータスPublished - 2012 8 21

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

フィンガープリント

「Electron holography studies on narrow magnetic domain walls observed in a heusler alloy Ni <sub>50</sub>Mn <sub>25</sub>Al <sub>12.5</sub>Ga <sub>12.5</sub>」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