Institution: | 1. Toyota Central Research and Development Laboratories, Inc. Nagakute, Aichi, 480‐1192 (Japan);2. National Institute for Materials Science, 1‐1 Namiki, Tsukuba, Ibaraki 305‐0044 (Japan);3. Department of Physics, Ritsumeikan University, Kusatsu, Shiga‐ken 525‐8577 (Japan) |