Institution: | (1) National Institute for Research in Inorganic Materials, 1-1 Namiki, Tsukuba-shi, 305 Ibaraki, Japan;(2) Physics Laboratory, Tokyo University of Fisheries, Konan, Minato-ku, 108 Tokyo, Japan;(3) Institute of Materials Science, University of Tsukuba, Tennoudai, Tsukuba-shi, 305 Ibaraki, Japan;(4) Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba-shi, 305 Ibaraki, Japan |