Influence of V substitution for Fe on the transport and magnetic properties of Sr2FeMoO6

We have investigated the crystal structure, magnetization and magnetoresistance of the double perovskite compounds Sr2(Fe1−xVx)MoO6 (0≤x≤0.1). The lattice constants and the cation ordering decrease monotonously with the V content. The Curie temperature, saturation magnetization and low field magnetoresistance of the compounds decrease with increasing x due to the reduced degree of ordering. The resistivity of Sr2FeMoO6 and lightly doped samples shows semiconductive behavior, while the samples with higher doping levels exhibit a semiconductor-metal transition around 80 K.