1. Department of Materials Science and Engineering, Faculty of Engineering; Kyoto University, Yoshida-Honmachi, Sakyo-Ku; Kyoto 606-8501 Japan
2. R&D Division, Panasonic Corporation; 3-4 Hikaridai, Seika-cho Soraku-gun Kyoto 619-0237 Japan
3. On leave from Panasonic Corporation; Hirakata Osaka 573 Japan
4. Research & Utilization Division; Japan Synchrotron Radiation Research Institute; 1-1-1 Kouto, Sayo-cho Sayo-gun Hyogo 679-5198 Japan
5. RIKEN SPring-8 Center, RIKEN; 1-1-1 Kouto, Sayo-cho Sayo-gun Hyogo 679-5148 Japan