Affiliation: | National Institute for Research in Inorganic Materials, 1-1, Namiki, Tsukuba-shi, Ibaraki, 305, Japan;HIgh-Technology Research Institute, Kawasaki Steel Corporation, 1, Kawasaki-cho, Chiba, 260, Japan;Kawasaki Steel Systems R&D Corporation, 1, Kawasaki-cho, Chiba, 260, Japan |