Progress in time-resolved photoemission electron microscopy at BL25SU, SPring-8: Radiofrequency field excitation of magnetic vortex core gyration

Takuo Ohkochi, Akinobu Yamaguchi, Masato Kotsugi, Hiroshi Hata, Minori Goto, Yukio Nozaki, Tetsuya Nakamura, Hitoshi Osawa, Toyohiko Kinoshita

研究成果: Article査読

8 被引用数 (Scopus)

抄録

We developed a system to carry out time-resolved photoemission electron microscopy under RF excitation at the BL25SU beamline in SPring-8. RF fields of up to ∼42 MHz could be applied to microsized magnetic disks with a power loss of less than 0.9 dB. We performed time-resolved realspace observations of the gyrotropic motion of the magnetic vortex core in Ni81Fe 19 disks under an RF magnetic field. We confirmed that significant core gyrations can be seen only when the resonant frequency of the disks matches with the excitation frequency of the system.

本文言語English
論文番号128001
ジャーナルJapanese journal of applied physics
51
12
DOI
出版ステータスPublished - 2012 12

ASJC Scopus subject areas

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

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