Detailed Study of Magnetic Behaviour in Single Crystalline Eu 3 Rh 4 Sn 13
Abstract
We have carried out detailed magnetization, heat capacity, electrical resistivity and 151 Eu Mössbauer measurements on a single crystal of Eu 3 Rh 4 Sn 13 , grown by high temperature solution method using tin as a solvent. Despite its cubic symmetry the compound exhibits anisotropic magnetic behaviour at low temperatures, ordering antiferromagnetically at 11.2 K. The entropy associated with the magnetic transition is in conformity with the divalent state of the Eu ions. Based on the susceptibility data magnetic phase diagrams are constructed for field parallel to principal crystallographic axes. A magnetic hyperfine field of 28 T is obtained from the hyperfine field split 151 Eu Mössbauer spectrum at 4.2 K.