Affiliation: | 1. Product and Technology Department , Teraoka Seisakusho Co Ltd , 1-4-22 Hiromachi Shinagawa, Tokyo, 140, Japan;2. Department of Materials Science, Faculty of Science and Engineering Science , University of Tokyo in Yamaguchi , 1-1-1 Daigaku-Dori Onoda, Yamaguchi, 756, Japan;3. Department of Applied physics, Faculty of Science , Science University of Tokyo , 1-3 Kagurazaka Shinjuku, Tokyo, 161, Japan |