Study of Magnetic Microstructures in Functional Materials by Using Electron Microscopy

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  • 電子顕微鏡を用いた機能性材料の磁気微細構造解析
  • デンシ ケンビキョウ オ モチイタ キノウセイ ザイリョウ ノ ジキ ビサイ コウゾウ カイセキ

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Abstract

This review article reports on the results of recent transmission electron microscopy studies about the complex magnetic domain structures produced in transition metal oxides. Cryogenic Lorentz microscopy and electron holography studies have revealed the nucleation and growth process of the ferromagnetic metal phase in a colossal magnetoresistive manganite La0.25Pr0.375Ca0.375MnO3. The in situ microscopy observations provide useful information for deeper understanding of the magnetic anomaly in a spinel-type compound MnV2O4, in which the micrometer-scale magnetic domains are lost below 42 K.

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