Magnetization distribution of magnetic vortex of amorphous FeSiB investigated by electron holography and computer simulation

Weixing Xia, Shinji Aizawa, Toshiaki Tanigaki, Takahiro Suzuki, Yoshihito Yoshizawa, Daisuke Shindo, Akira Tonomura

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The three-dimensional spin structure of the magnetic vortex of FeSiB, an amorphous soft magnetic material, was investigated by holography observation and computer simulation. Magnetization distribution in the neighborhood of the vortex center was estimated from the phase distribution obtained by holography observation. To confirm this magnetization distribution, sample-tilting experiments were performed: when the sample was tilted with respect to the electron beam direction, the phase-image center was found to shift along the tilting axis. Finite-element computer simulation was carried out to estimate the amount of shifts of the phase-image center in the sample tilting from the experimental magnetization distributions in the no sample-tilting conditions. We found that the simulated shifts of the phase-image center were in good agreement with those in the sample-tilting experiment, thus confirming the magnetization distribution near the vortex center obtained by holography observation.

Original languageEnglish
Pages (from-to)71-76
Number of pages6
JournalJournal of Electron Microscopy
Volume61
Issue number2
DOIs
Publication statusPublished - 2012 Apr

Keywords

  • Computer simulation
  • Electron holography
  • Magnetic vortex

ASJC Scopus subject areas

  • Instrumentation

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