*Keisuke Matsumoto1, Keisuke Ishihama2, Ken Ishihara1, Masaki Kobayashi1, Jun Gouchi3, Yoshiya Uwatoko3, Koichi Hiraoka1
(1. Graduate school of Science and Engineering, Ehime University(Japan), 2. Department of Materials Science and Engineering, Ehime University(Japan), 3. Institute for Solid State Physics, University of Tokyo(Japan))
Keywords:Valence fluctuations, Thermal expansion