Magnetism in R 5Rh 4Sn 10 (RCe, Pr, Nd) systems

Abstract

Ternary rare-earth intermetallic compounds of the type R 5T 4M 10 (RDy to Lu, TCo, Rh, Ir, Os and MSi, Ge) exhibit unusual magnetic and superconducting properties with charge density wave transition (CDW). In this paper, we report the magnetic properties of a new series of R 5Rh 4Sn 10 compounds, where RCe, Pr and Nd. We find magnetic ordering at 4.3, 5.6 and 7.3 K for Ce, Pr and Nd compounds, respectively. The fit to the normal state heat capacity data on Ce 5Rh 4Sn 10 yields 0.1 J/Ce-mol K 2 for γ. A large anomaly in the heat-capacity data is observed for Nd 5Rh 4Sn 10 at 6.3 K, which could be due a possible structural transition driven by the antiferromagnetic ordering.