Formation of columnar-shaped structure of Fe in Fe-Cr-Sn thin films and its shape-magnetic anisotropy

Tetsu Ichitsubo, Takeshi Uchihara, Eiichiro Matsubara, Susumu Tsukimoto, Yoshinori Tamada, Teruo Ono

    Research output: Contribution to journalArticle

    Abstract

    In this work studied has been the fabrication method of columnar-structured Fe thin film for manifestation of a shape anisotropy in Fe-Cr alloy system, in which the phase separation occurs naturally by the thermal treatment. In order to obtain such a columnar structure, we have utilized the phase separation on a Sn-nanoparticle-dispersed Si substrate, by exploiting an excellent metallurgical affinity of Fe and Sn, and moreover we have employed applying an external magnetic field. Resultingly, we have found that the columnar-structured Fe thin films are likely to be formed after annealing. Thus obtained Fe-Cr-Sn thin film was found to exhibit a high shape-magnetic anisotropy, where the out-of-plane coercivity Hcl was about 750 Oe, being five times larger than the in-plane coercivity Hck of about 150 Oe.

    Original languageEnglish
    Article number013004
    JournalJapanese journal of applied physics
    Volume50
    Issue number1
    DOIs
    Publication statusPublished - 2011 Jan 1

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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