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K. Hatakeyama
Faculty of Science and Technology, KEIO UNIV.
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S. Anzai
Faculty of Science and Technology, KEIO UNIV.
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T. Kaneko
Institute for Material Research, TOHOKU UNIV.
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S. Ohta
HACHINOHE Institute of Technology.
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H. Yoshida
Institute for Material Research, TOHOKU UNIV.