Observation of magnetic domain structure in FePt(001) films by electron holography and lorentz microscopy

Tomokazu Hino, Yasukazu Murakami, Daisuke Shindo, Satoshi Okamoto, Osamu Kitakami, Yutaka Shimada

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Magnetic domain structure of FePt(011) films, which show huge magnetocrystalline anisotropy, was observed by electron holography and Lorentz microscopy. Although these methods have advantages for the microanalysis of magnetic domains, e.g., the high spatial resolution, detection of the magnetic signal is rather difficult, when the magnetization vector is parallel to the incident electron beam like the case of FePt(001) films. Here we demonstrate that the intensive observations are possible when the specimen is tilted in a microscope so that the magnetic flux perpendicular to the incident beam is generated. The holography experiment using the cross-sectioned specimen also provided useful information about the stray magnetic field of the FePt(011) films.

Original languageEnglish
Pages (from-to)315-319
Number of pages5
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume68
Issue number5
DOIs
Publication statusPublished - 2004 May

Keywords

  • L1 -type structure
  • Magnetic anisotropy
  • Magnetic domain wall
  • Magnetic recording
  • Magnetic thin films
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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