Competition between magnetic ordering and random spin freezing in DyPtS

DyPtSにおける磁気秩序とスピン凍結の競合

Li, D.*; 山村 朝雄*; 本間 佳哉*; 湯葢 邦夫*; 四竈 樹男*; 青木 大*; 二森 茂樹*; 芳賀 芳範   

Li, D.*; Yamamura, Tomoo*; Homma, Yoshiya*; Yubuta, Kunio*; Shikama, Tatsuo*; Aoki, Dai*; Nimori, Shigeki*; Haga, Yoshinori

We report the results for ac and dc susceptibility, magnetization, magnetic relaxation, specific heat and electrical resistivity measurements on a well annealed ternary intermetallic compound DyPtSi. An unusual magnetic phase transition with an apparent ferromagnetic nature was observed at = 5.6 K. The classification of DyPtSi as a large magnetic cluster (extended short-range ferromagnetic ordered) system with competition between magnetic ordering and random spin freezing seems appropriate.