1. Oita R & D Lab. Technical Research & Development Bureau NIPPON STEEL & SUMITOMO METAL Corp.
2. Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University
3. Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology
4. Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University
5. Research Center for Strategic Materials, National Institute for Materials Science
6. Department of Materials Science and Engineering, Kumamoto University