Evolution of magnetic domain patterns associated with field-induced DHCP-HCP transformation of Co-1.2%Fe alloy

Toshiro Tanaka, Migaku Takahashi, Shizuo Kadowaki

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    Abstract

    The magnetic domain patterns of the pure double-hcp (dhcp) phase and hcp-mixed-dhcp phase of Co-1.2%Fe alloy single crystals were investigated to clarify the nucleation and growth process of the hcp phase from the dhcp phase in the external magnetic field. The thin hcp phases appeared to be parallel to the c-plane in the pure dhcp phase at phase transformation. The domain observation failed to detect the nucleation site of the dhcp-to-hcp phase transformation. The nucleation site and growing process of the hcp phase are discussed with respect to the effect of the shear stress induced by magnetostriction. The calculated maximum shear stress induced by magnetostriction was found to be on the same order of the resolved shear stress of Co, and it could be realized in the domain walls but not in the domains. This shear stress in the domain walls might be the motivating force in generating nucleation sites of hcp phase.

    Original languageEnglish
    Pages (from-to)950-954
    Number of pages5
    JournalMaterials Transactions, JIM
    Volume41
    Issue number8
    DOIs
    Publication statusPublished - 2000

    ASJC Scopus subject areas

    • Engineering(all)

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