Universal Hysteresis Behavior of Double Perovskite Ba_(2-x)La_xFeMoO_6

摘要

We have investigated temperature-dependent magnetic hysteresis loop behavior of Ba_(2-x)La_xFeMoO_6 with double perovskite structure by means of a vibrating sample magnetometer (VSM). As partial substitution of Ba~(2+) by La~(3+) is varied from x = 0.1 to 0.3, T_C is found to increase from 324 to 345 K. Interestingly, however, hysteresis loop area, remanent magnetization, and coercivity are found to follow a universal behavior with respect to a temperature variation regardless of the Ba~(2+) substitution.