La0.7Ca0.3- xSr xMnO3薄膜的电输运特性研究

La_0.7Ca_0.3- _xSr _xMnO₃薄膜的电输运特性研究

张媛媛¹, 唐晓东¹, 陈莹², 王根水², 董显林²

Electrical Transport Properties in La_0.7Ca_0.3- _xSr _xMnO₃ Thin Films

ZHANG Yuan-Yuan¹, TANG Xiao-Dong¹, CHEN Ying², WANG Gen-Shui², DONG Xian-Lin²

La_0.7(Ca_0.3- _x Sr _x )MnO₃薄膜(a)零磁场时电阻率和(b)外加3T磁场时的磁阻率( ρ (3T)- ρ (0T))/ ρ (0T)%)随温度变化曲线