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Yutaka Matsumoto
Department of Material Physics, Faculty of Engineering Science, Osaka University, 1–3 Machikaneyama–cho, Toyonaka 560
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Minoru Otani
Department of Material Physics, Faculty of Engineering Science, Osaka University, 1–3 Machikaneyama–cho, Toyonaka 560
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Hiroshi Miyagi
Department of Material Physics, Faculty of Engineering Science, Osaka University, 1–3 Machikaneyama–cho, Toyonaka 560
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Naoshi Suzuki
Department of Material Physics, Faculty of Engineering Science, Osaka University, 1–3 Machikaneyama–cho, Toyonaka 560