1. Institute for Materials Research, Tohoku University, 2-1-1 Katahira,
Aoba-ku, Sendai 980-8577, Japan
2. Department of Mechanical Systems Engineering, Graduate School of Engineering, Tohoku University, 6-6-01 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
3. Division of Vehicle Development, Department of Technical Development, Toyota Motor East Japan, INC., 1501, Misyuku, Susono 410-1198, Japan
4. New Industry Creation Hatchery Center, Tohoku University, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan