非線形磁化ダイナミクスの定量評価法

Genki Okano, Yukio Nozaki

研究成果: Article査読

抄録

We have developed an experimental technique to investigate a nonlinear magnetization dynamics resonantly excited by strong microwave fields. In this technique, a magnetization switching was observed when a sub-nanosecond wide pulsed field was applied to the ferromagnetic resonance-excited ferromagnets. Such a cooperative switching with simultaneous application of microwave- and pulsed-fields can evaluate an effective energy barrier for magnetization switching in various nonlinear magnetization dynamics. In this review, we show the experimental results on (1) the temporal evolution of the energy barrier in the transient of magnetization precession growth and (2) the observation of saddle-node bifurcation in the microwave-excited nonlinear magnetization dynamics.

寄稿の翻訳タイトルExperimental method for quantitative evaluation of nonlinear magnetization dynamics
本文言語Japanese
ページ(範囲)99-104
ページ数6
ジャーナルIEEJ Transactions on Fundamentals and Materials
141
2
DOI
出版ステータスPublished - 2021 2 1

Keywords

  • Ferromagnetic resonance
  • Microwave-assisted magnetization switching
  • Nonlinear dynamics

ASJC Scopus subject areas

  • 電子工学および電気工学

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