1. NOF Corporation, 5-10 Tokodai, Tsukuba, Ibaraki 300-2635, Japan, Department of Applied Science for Electronics and Materials, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan, Institute for Material Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan, and Japan Synchrotron Radiation Research Institute, 1-1-1 Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan