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

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)630031-630034
Number of pages4
JournalJapanese journal of applied physics
Volume49
Issue number6 PART 1
DOIs
Publication statusPublished - Jun 1 2010

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Magnetization reversal
Perovskite
Microscopic examination
microscopy
magnetization
Magnetic storage
Transmission electron microscopy
data storage
assembly
transmission electron microscopy

All Science Journal Classification (ASJC) codes

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

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Lorentz microscopy study on magnetization reversal process in single-domain state in perovskite-type manganite. / Mamishin, Shuichi; Kasai, Hiroto; Xia, Weixing; Murakami, Yasukazu; Shindo, Daisuke; Mori, Shigeo; Tonomura, Akira.

In: Japanese journal of applied physics, Vol. 49, No. 6 PART 1, 01.06.2010, p. 630031-630034.

Research output: Contribution to journalArticle

Mamishin, Shuichi ; Kasai, Hiroto ; Xia, Weixing ; Murakami, Yasukazu ; Shindo, Daisuke ; Mori, Shigeo ; Tonomura, Akira. / Lorentz microscopy study on magnetization reversal process in single-domain state in perovskite-type manganite. In: Japanese journal of applied physics. 2010 ; Vol. 49, No. 6 PART 1. pp. 630031-630034.
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