Electron holography study of magnetization behavior in the writer pole of a perpendicular magnetic recording head by a 1 MV transmission electron microscope

Kei Hirata, Yoichi Ishida, Tetsuya Akashi, Daisuke Shindo, Akira Tonomura

    研究成果: Article査読

    3 被引用数 (Scopus)

    抄録

    The magnetic domain structure of the writer poles of perpendicular magnetic recording heads was studied using electron holography. Although the domain structure of a 100-nm-thick writer pole could be observed with a 300 kV transmission electron microscope, that of the 250-nm-thick writer pole could not be analyzed due to the limited transmission capability of the instrument. On the other hand, the detailed domain structure of the 250-nm-thick writer pole was successfully analyzed by a 1 MV electron microscope using its high transmission capability. The thickness and material dependency of the domain structure of a writer pole were discussed.

    本文言語English
    ページ(範囲)305-308
    ページ数4
    ジャーナルJournal of Electron Microscopy
    61
    5
    DOI
    出版ステータスPublished - 2012 10月

    ASJC Scopus subject areas

    • 器械工学

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