Formation of Columnar-Shaped Structure of Fe in Fe--Cr--Sn Thin Films and Its Shape-Magnetic Anisotropy
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概要
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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 $H_{\text{c}\bot}$ was about 750 Oe, being five times larger than the in-plane coercivity $H_{\text{c}\|}$ of about 150 Oe.
- 2011-01-25
著者
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Ichitsubo Tetsu
Department Of Materials Science And Engineering Graduate School Of Engineering Kyoto University
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Matsubara Eiichiro
Department Of Materials Science And Engineering Faculty Of Engineering Kyoto University
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Uchihara Takeshi
Department Of Electrical And Electronics Engineering Nippon Institute Of Technology
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Matsubara Eiichiro
Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501, Japan
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Ono Teruo
Division of Materials Chemistry, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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Tsukimoto Susumu
WPI-AIMR, Tohoku University, Sendai 980-8577, Japan
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Tamada Yoshinori
Division of Materials Chemistry, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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MATSUBARA Eiichiro
Department of Material Science and Engineering, Kyoto University
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