1. a Toshiba R & D Center , 4-1, Ukishima-cho, Kawasaki-ku, Kawasaki , 210 , Japan
2. b Showa Electric Wire & Cable Co., Ltd. , 2-1-1, Odasakae, Kawasaki-ku, Kawasaki , 210 , Japan
3. c National Research Institute for Metals , 1-2-1, Sengen, Sakura-mura, Niihari-gun, Ibaraki , 305 , Japan