1. Advanced Technology Research & Development Center, Hitachi Chemical Company, Ltd., 48 Wadai, Tsukuba, Ibaraki 300-4247, Japan
2. Research & Development Group, Hitachi, Ltd., 7-1-1 Omika, Hitachi, Ibaraki 319-1292, Japan
3. Institute of Multidisciplinary Research for Advanced Material, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan