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Takuya Takahashi
Dept of Material Sci & Engineering, Akita Univ.
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Hiroshi Masumoto
Center for Interdisciplinary Research, Tohoku Univ.
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Takashi Goto
Institute for Materials Research, Tohoku Univ.
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Yutaka Tsujiuchi
Dept of Material Sci & Engineering, Akita Univ.