Electron holography observation of in-plane domain structure in writer pole for perpendicular recording heads

K. Hirata, Y. Ishida, J. J. Kim, H. Kasai, D. Shindo, Migaku Takahashi, A. Tonomura

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    A direct observation of the in-plane domain structure of the writer pole of a perpendicular recording head was performed by electron holography in order to investigate the cause of pole erasure due to the instability of the domain wall behavior. The instability of domain structure of the writer pole generated a stray field on the air bearing surface of the writer pole. The domain wall trapping at the pole tip was found quite effective to form a stable domain structure in the remanent state, and it reflected domain wall energy change and initial domain structure of the writer pole.

    Original languageEnglish
    Article number07D538
    JournalJournal of Applied Physics
    Volume105
    Issue number7
    DOIs
    Publication statusPublished - 2009

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Fingerprint

    Dive into the research topics of 'Electron holography observation of in-plane domain structure in writer pole for perpendicular recording heads'. Together they form a unique fingerprint.

    Cite this