Electron holography of magnetic field generated by a magnetic recording head

Takayuki Goto, Jong Seok Jeong, Weixing Xia, Zentaro Akase, Daisuke Shindo, Kei Hirata

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    The magnetic field generated by a magnetic recording head is evaluated using electron holography. A magnetic recording head, which is connected to an electric current source, is set on the specimen holder of a transmission electron microscope. Reconstructed phase images of the region around the magnetic pole show the change in the magnetic field distribution corresponding to the electric current applied to the coil of the head. A simulation of the magnetic field, which is conducted using the finite element method, reveals good agreement with the experimental observations.

    Original languageEnglish
    Pages (from-to)383-389
    Number of pages7
    JournalJournal of Electron Microscopy
    Volume62
    Issue number3
    DOIs
    Publication statusPublished - 2013 Jun

    Keywords

    • electron holography
    • finite element method
    • in situ observation
    • magnetic field
    • magnetic recording head
    • transmission electron microscopy

    ASJC Scopus subject areas

    • Instrumentation

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