Real-space observation of magnetic vortex core gyration in a magnetic disc both with and without a pair tag

Akinobu Yamaguchi, Hiroshi Hata, Minori Goto, Motoi Kodama, Yuichi Kasatani, Koji Sekiguchi, Yukio Nozaki, Takuo Ohkochi, Masato Kotsugi, Toyohiko Kinoshita

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Abstract

We demonstrate the time-resolved real-space observation of vortex gyration in a magnetic circular disc by X-ray magnetic circular dichroism photoemission microscopy at the SPring-8 beamline BL25SU, both with and without an additional structure called a pair tag, which serves to control the magnetic curling direction. By comparing the gyration orbits of the vortices, we found that the gyration properties are dependent on the presence of the additional structure in spite of the discs having the same diameter. Furthermore, we reproduced the vortex gyration by micromagnetic simulation. The confinement potential of the vortex can be controlled by the additional structure.

Original languageEnglish
Article number023002
JournalJapanese Journal of Applied Physics
Volume55
Issue number2
DOIs
Publication statusPublished - 2016 Feb 1

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ASJC Scopus subject areas

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

Cite this

Yamaguchi, A., Hata, H., Goto, M., Kodama, M., Kasatani, Y., Sekiguchi, K., Nozaki, Y., Ohkochi, T., Kotsugi, M., & Kinoshita, T. (2016). Real-space observation of magnetic vortex core gyration in a magnetic disc both with and without a pair tag. Japanese Journal of Applied Physics, 55(2), [023002]. https://doi.org/10.7567/JJAP.55.023002