Observation of magnetic domain structure in Fe81B 15Si4 amorphous alloy by Lorentz microscopy and electron holography

Masahiro Hiraoka, Zentaro Akase, Daisuke Shindo, Yuichi Ogawa, Yoshihito Yoshizawa

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    Effects of heat treatment, with and without an external magnetic field, on the magnetic properties of Fe81B15Si4 amorphous specimens are investigated by Lorentz microscopy and electron holography. These observations are used to clarify the details of magnetizing processes in the specimens. It is found that heat-treatment with an external magnetic field increases the magnetic anisotropy, while that without reduces the magnetic anisotropy. It is considered that this difference results from the alleviation of the strain field by heat treatment and the induced magnetic anisotropy caused by heat treatment with a magnetic held.

    Original languageEnglish
    Pages (from-to)2839-2843
    Number of pages5
    JournalMaterials Transactions
    Issue number12
    Publication statusPublished - 2009 Dec


    • Amorphous magnetic materials
    • Electron holography
    • Heat treatment
    • Lorentz microscopy
    • Magnetic domain structure

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering


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