1. Yamazaki Branch, Sumitomo Special Metals Co., LTD, 2-15-17 Egawa, Shimamotocho, Mishimagun, Osaka 618
2. Department of Physics, Faculty of Science, Kobe University Rokkodai, Nada, Kobe 657
3. Department of Physics, Faculty of Science, Osaka University, Toyonaka, Osaka 560