1. Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University, Saga 840-8502, Japan
2. Saga Ceramics Research Laboratory, 3037-7 Hei Kuromuta, Arita-cho, Nishimatsuura-gun, Saga 844-0022, Japan
3. Ceramic Research Center of Saga University, 2441-1 Oono-otsu, Arita-cho, Nishimatsuura-gun, Saga 844-0013, Japan