Imaging of transient magnetization dynamics of Co/Pt multilayer dots with X-ray magnetic circular dichroism excited by microwaves

N. Kikuchi, T. Yomogita, K. Sato, S. Okamoto, O. Kitakami, H. Osawa, M. Suzuki, K. Toyoki, Y. Kotani, T. Nakamura

研究成果: Article

抜粋

We investigated the magnetization dynamics of Co/Pt multilayer dots with diameters in the micron scale by X-ray magnetic circular dichroism (XMCD) with a focused beam with submicron dimensions. XMCD measurement with soft and hard X-rays revealed that the magnetic moments of Co and Pt strongly couple and precess with the same cone angle in ferromagnetic resonance conditions. The transient magnetization behavior of Co/Pt multilayer dots was investigated by pump-probe XMCD measurement with a scanning focused X-ray beam. A non-uniform magnetization distribution with concentric geometry including the phase of magnetization precession was visualized with excitation frequencies up to 3.05 GHz.

元の言語English
記事番号SEED03
ジャーナルJapanese journal of applied physics
59
発行部数SE
DOI
出版物ステータスPublished - 2020

ASJC Scopus subject areas

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

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