1-Feb-1999 | Structural phase transition in the ammoniated alkali C_<60> compound (NH_3)K_3C_<60> | Ishii, Kenji; Watanuki, Tetsu; Fujiwara, Akihiko; Suematsu, Hiroyoshi; Iwasa, Yoshihiro; Shimoda, Hideo; Mitani, Tadaoki; Nakao, Hironori; Fujii, Yasuhiko; Murakami, Youichi; Kawada, Hajime |