Large magnetoresistance, structure and magnetic properties of the double perovskite LaKFe1.2Mo0.8O6 compound
Guoyan Huo, a, , Shuang Liua, Ye Wanga and Yuping Wanga
aSchool of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China
Received 20 January 2006; revised 24 March 2006; accepted 24 March 2006. Available online 2 May 2006.
The double perovskite LaKFe1.2Mo0.8O6 ceramics have been successfully synthesized. The structure, magnetic and transport properties of this compound have been studied. Its structure belongs to cubic system with space group . Magnetization slowly reduced with temperature and large magnetoresistance of the sample under 1.0 T magnetic field remains constant around 0.95 in the studied temperature range. Magnetic field dependence of magnetoresistance is described and magnetoresistance increases abruptly under 0.65 T. The electrical transport properties can be described by the thermally activated hopping mechanism.
Keywords: Double perovskite LaKFe1.2Mo0.8O6 compound; Synthesis; Large magnetoresistance; Magnetic properties; Crystal structure