1. Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University; 3-4-1 Kowakae, Higashi-Osaka Osaka 577-8502 Japan
2. Computational Materials Science Center; National Institute for Materials Science; 1-2-1 Sengen, Tsukuba Ibaraki 305-0047 Japan
3. Graduate School of Materials Science; Nara Institute of Science and Technology, Takayama, Ikoma; Nara 630-0192 Japan