Direct observation of magnetization reversal in thin Nd 2Fe 14B film

H. S. Park, Y. G. Park, Y. Gao, D. Shindo, M. Inoue

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    20 Citations (Scopus)

    Abstract

    By utilizing a sharp magnetic needle made of a sintered Nd 2Fe 14B permanent magnet, we were able to produce a strong magnetic field of up to approximately 560 kA/m in a transmission electron microscope and succeeded in observing the magnetization reversal in a thin film of sintered Nd 2Fe 14B by in situ Lorentz microscopy. The increase in the magnetic field induced by the magnetic needle led to a pair of straight magnetic domain walls forming abruptly from the grain boundary. The successive nucleation in the neighboring grain started at the grain boundary adjacent to the magnetic domain wall formed first. Eventually, the magnetic domain walls in the neighboring grains connected and moved continuously and finally disappeared.

    Original languageEnglish
    Article number033908
    JournalJournal of Applied Physics
    Volume97
    Issue number3
    DOIs
    Publication statusPublished - 2005 Feb 1

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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