Magnetic properties of new compounds RuMn2Sn and RuMn2Si

New compounds RuMn(2)Z (Z = Si, Sn) have been synthesized. X-ray diffraction measurements have confirmed that RuMn(2)Z (Z = Si, Sn) crystallizes in a Heusler-like cubic structure. The lattice parameters of RuMn2Si and RuMn2Sn at room temperature are estimated to be 5.8260 angstrom and 6.2195 angstrom, respectively. Magnetization measurements have been carried out in fields up to 50 kOe for RuMn(2)Z (Z = Si, Sn). Furthermore, the temperature dependence of initial permeability of RuMn2Sn has been studied. RuMn2Sn shows ferrimagnetic behavior. The spontaneous magnetic moment at 5 K and the Curie temperature of RuMn2Sn are found to be of 1.68 mu(B)/f.u. and 272.1 K, respectively. RuMn2Si exhibits spin-glass-like behavior with a freezing temperature estimated to be about 50 K. (C) 2011 Elsevier B.V. All rights reserved.