Institution: | 1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2‐1‐1, Katahira, Aoba‐ku, Sendai 980‐8577 (Japan), Fax: (+81)?22‐217‐5612;2. School of Materials Science, Japan Advanced Institute of Science and Technology, 1‐1, Asahidai, Nomi, Ishikawa 923‐1292 (Japan) |