Structural and Magnetic Properties of the Double Perovskite LaKFeMoO₆ Compound.

Abstract

Structural and Magnetic Properties of the Double Perovskite LaKFeMoO6Compound. -The title ceramic is synthesized by solid state reaction of La 2 O 3 , K 2 CO 3 , Fe2O3, and (NH4)6Mo7O24·4H2O (7% H2/Ar, 920°C, 16 h) and characterized by powder XRD, electrical resistivity, and magnetization measurements. The compound crystallizes in the tetragonal space group P42/n. The samples have a transition temperature higher than 500 K. The magnetization slowly decreases with temperature, and the compound exhibits large magnetoresistance in the range from 80 K to room temperature. -(HUO*, G.; LIU, S.; WANG, Y.; WANG, Y.; J.