1. Department
of Chemistry, Division of Material Sciences, Graduate School of Natural
Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
2. Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1
Katahira, Aoba-ku, Sendai 980-8577, Japan
3. Institute
for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan