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Magnetic and Transport Properties of a New Caged Compound PrOs2Zn20
K. Wakiya,N. Nagasawa,K. T. Matsumoto,T. Onimaru,K. Umeo,T. Takabatake 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
The magnetic and transport properties of a Pr-encaged compound PrOs2Zn20 have been studiedby the electrical resistivity (T), magnetic susceptibility ρ(T), and specific heat C(T) measurementsdown to 2 K. The (T) and the C(T) show distinct anomalies at Ts = 87 K, which resemble theanomalies in the isostructural and isoelectronic compound PrRu2Zn20 with the structural phasetransition at Ts = 138 K. Above 50 K, the ρ(T) follows the Curie-Weiss law with the effectivemagnetic moment of 3.64 µB/f.u., which indicates the trivalent state of the Pr ion. The saturatedbehavior of ρ(T) below 5 K indicates the Van-Vleck paramagnetic state. Hence, the Pr3+ ion fallsin a nonmagnetic ground state under the crystalline electric field.