Characteristics of Domain Wall Motion in CoFeB Films with Inplane Uniaxial Magnetic Anisotropy

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  • Watanabe T.
    Faculty of Computer Science, Kyushu Institute of Technology
  • Kakuho N.
    Faculty of Computer Science, Kyushu Institute of Technology
  • Furuno T.
    Faculty of Computer Science, Kyushu Institute of Technology
  • Ohkoshi M.
    Faculty of Computer Science, Kyushu Institute of Technology
  • Munakata M.
    Energy Electronics Laboratory, Sojo University

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  • 一軸磁気異方性ＣｏＦｅＢ薄膜の磁壁移動特性
  • 1ジク ジキ イホウセイ CoFeB ハクマク ノ ジヘキ イドウ トクセイ

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Abstract

The dynamic magnetization process is studied in CoFeB films for high frequency application by using a time-resolved imaging technique. The domain wall mobility of 12 m/sOe was observed at the resonant frequency of 220 kHz. The effective wall mass, viscous damping constant, and restoring force constant were evaluated in CoFeB films.

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