Heat capacity studies on rattling vibrations in Ba?TM?Ge type I clathrates" J. Xu, S. Heguri, Y. Tanabe, G. Mu, J. Wu, K. Tanigaki
J. Xu, S. Heguri, Y. Tanabe, G. Mu, J. Wu, K. Tanigaki
Journal of Physics and Chemistry of Solids
73
1521