Saturation magnetization and uniaxial magnetocrystalline anisotropy for Co-based binary and Co-Ge-Cr ternary alloys

M. Takahashi, H. Shoji, S. Kadowaki, D. D. Djayaprawira, Y. Komori, H. Domon

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    In order to develop a magnetic material for high-density magnetic recording media which overcomes the thermal agitation effect, the magnetic properties, such as saturation magnetization and magnetic anisotropy, were evaluated for Co-M (M = Pt, Pd, Ru, Rh, Os, Cr, Ge, Mo, Mn, Re, and Si) binary alloys. Ge addition was found to be effective in maintaining the value of the magnetic anisotropy field of Co. Furthermore, a ternary magnetic alloy of Co-Ge-Cr (85 at. % Co, 10 at. % Ge, 5 at. % Cr) was found to have the following magnetic properties: Kgrainu ≥ 3 × 106 erg/cm3, Hgraink ≈ 10kOe, and 4 π M s/Hgraink < 1.0. This magnetic material is a very promising candidate for use in high-density magnetic recording media.

    Original languageEnglish
    Pages (from-to)3457-3459
    Number of pages3
    JournalApplied Physics Letters
    Volume76
    Issue number23
    DOIs
    Publication statusPublished - 2000 Jun 5

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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