Effect of grain size on intergranular magnetostatic coupling in thin-film media

Haruhito Mitsuya, Atsushi Endo, Akira Kikuchi, Junichi Nakai, Hiroki Shoji, Migaku Takahashi

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    1 Citation (Scopus)

    Abstract

    In order to characterize the intergranular coupling and to clarify the effect of grain size on intergranular magnetostatic coupling in thin-film media, the temperature dependences of magnetic properties Hc, Hkgrain, and Ms, for ultraclean-(UC)-processed CoCrTa media with various grain sizes have been examined in order to discuss the effect of grain size on intergranular magnetostatic coupling. The results are that (1) in the UC-processed media, the magnetostatic coupling mode is found to be dominant as the intergranular coupling and in the normal processed media, the exchange coupling mode is dominant, and (2) the decrease in 4πMs/Hkgrain below 1.0 is the most effective to suppress the increment in the magnetostatic coupling due to the reduction in the grain size, were clarified.

    Original languageEnglish
    Pages (from-to)4680-4682
    Number of pages3
    JournalJournal of Applied Physics
    Volume81
    Issue number8 PART 2A
    DOIs
    Publication statusPublished - 1997 Apr 15

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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