Disorder induced magnetism and electrical conduction in La doped Ca2FeMoO6 double perovskite

作者：Poddar Asok^*; Bhowmik R N; Muthuselvam I Panneer

来源：Journal of Applied Physics, 2010, 108(10): 103908.

DOI：10.1063/1.3510495

We report the magnetism and electrical transport properties of La doped Ca2FeMoO6 double perovskite. Reduction in magnetic moment, nonmonotonic variation in magnetic ordering temperature (TC), increasing magnetic hardness, low temperature resistivity upturn, and loss of metallic conductivity are some of the major changes that we observed due to La doping induced disorder in double perovskite structure. The increase in magnetic disorder in La doped samples and its effect on TC is more consistent with the mean field theory. The modification in electronic band structure due to La doping is understood by establishing a correlation between the temperature dependence of electrical conductivity and thermoelectric power.

• 出版日期2010-11-15