Lorentz microscopy study on magnetization reversal process in single-domain state in perovskite-type manganite

Shuichi Mamishin, Hiroto Kasai, Weixing Xia, Yasukazu Murakami, Daisuke Shindo, Shigeo Mori, Akira Tonomura

研究成果: Contribution to journalArticle

抜粋

The phenomenon of ferromagnetic domain switching, which occurred in a colossal magnetoresistive manganite La0:25Pr0:375Ca 0:375MnO3, was studied by sophisticated transmission electron microscopy techniques. Lorentz microscopy observations revealed the size dependence of the magnetization reversal behaviors. A small single-domain (70 nm) exhibited a direct switching process to another single-domain form, while a large single domain (150 nm) showed a multiple-domain configuration before the transformation to another single-domain state. We also demonstrated significant magnetic interaction in an assembly of single domains; i.e., neighboring single domains underwent magnetization reversal simultaneously. The results provide useful information for a deeper understanding of the switching process in a single-domain state, which can be observed in many advanced materials related to magnetic data storage media.

元の言語英語
ページ(範囲)630031-630034
ページ数4
ジャーナルJapanese journal of applied physics
49
発行部数6 PART 1
DOI
出版物ステータス出版済み - 6 1 2010
外部発表Yes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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