Crystal structural, magnetic and electrical transport properties of CeKFeMoO6 double perovskite

Abstract The crystal structural, magnetic and electrical transport properties of double perovskite CeKFeMoO 6 have been investigated. The crystal structure of the compound is assigned to the monoclinic system with space group P 2 1 /n and its lattice parameters are a =0.55345(3) nm, b =0.56068(2) nm, c =0.78390(1) nm, β =89.874(2). The divergence between zero-field-cooling and field-cooling M – T curves demonstrates the anisotropic behavior. The Curie temperature measured from C p – T curve is about 340 K. Isothermal magnetization curve shows that the saturation and spontaneous magnetization are 1.90 and 1.43 μ B /f.u. at 300 K, respectively. The electrical behavior of the sample shows a semiconductor. The electrical transport behavior can be described by variable range hopping model. Large magnetoresistance, −0.88 and −0.18, can be observed under low magnetic field, 0.5 T, at low and room temperature, respectively.