1. Iwate Industrial Promotion Center 3-35-2, Iioka-shinden, Morioka, 020-0852, Japan
2. Department of Pure and Applied Sciences, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1, Tennoudai, Tsukuba, Ibaraki, 305-8573, Japan
3. Tsukuba Magnet Laboratory, National Institute for Materials Science, 3-13 Sakura, Tsukuba, Ibaraki, 305-0003, Japan
4. Faculty of Engineering, Iwate University, 3-4-5, Ueda, Morioka, 020-8551, Japan