High-pressure torsion for production of magnetoresistance in Cu-Co alloy

Kenichiro Suehiro, Shunichi Nishimura, Zenji Horita, Seiji Mitani, Koki Takanashi, Hiroyasu Fujimori

    研究成果: Contribution to journalArticle査読

    20 被引用数 (Scopus)

    抄録

    The process of high-pressure torsion (HPT) was applied to control the size and distribution of ferromagnetic Co particles in a Cu-Co alloy. Electron probe microanalysis, X-ray diffraction analysis, and transmission electron microscopy confirmed that the Co particles were significantly refined through fragmentation and dissolved with intense straining by HPT. Magnetoresistance appeared by ~2.5% at 77 K with an isotropic feature corresponding to giant magnetoresistance (GMR). It is demonstrated that HPT is a potential process for creating GMR in the Cu-Co alloy prepared by conventional ingot metallurgy.

    本文言語英語
    ページ(範囲)7349-7353
    ページ数5
    ジャーナルJournal of Materials Science
    43
    23-24
    DOI
    出版ステータス出版済み - 12 1 2008

    All Science Journal Classification (ASJC) codes

    • 材料科学(全般)
    • 材料力学
    • 機械工学

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