节点文献

(La_0.9Bi_0.1)_2/3Ca_1/3MnO₃磁性和电输运性质研究

Magnetic and transport properties of(La_0.9Bi_0.1)_2/3Ca_1/3MnO₃

推荐 CAJ下载
PDF下载
不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 KUANG An-long~1,YUAN Hong-kuan~1,CHEN Hong~1,JIANG Xiao-long~2,LIU Xing-chong~2,LU Zhong-lin~2,DU You-wei~2(1.School of Physical Science and Technology,Southwest University,Chongqing 400715,China;2.National Laboratory of Solid State Microstructures,Nanjing University,Nanjing 210093,China)

【机构】西南大学物理科学与技术学院；南京大学固体微结构国家重点实验室；南京大学固体微结构国家重点实验室重庆400715；重庆400715；江苏南京210093；

【摘要】利用固相反应法制备了(La0.9Bi0.1)2/3Ca1/3MnO3样品,研究了它的导电特性和磁性。在电阻和磁化测量中观察到热滞现象。在电阻-温度(R-T)曲线中出现了两个峰,当施加5T外场时,电阻中的热滞现象被抑制,只观察到一个峰。磁化(M-T)曲线表明,在居里温度(Tc)以下发生了顺磁-铁磁(PM-FM)相变。样品不同寻常的M-T行为能够很好地解释测量到的R-T曲线。更多还原

【Abstract】 (La_0.9Bi_0.1)_2/3Ca_1/3MnO₃ manganite perovskite was synthesized by solid state reaction and the magnetic and transport properties were measured.A considerable thermal hysteresis in resistance and magnetization has been observed,and two peaks occur in R-T curve.After applied 5 T field,the thermal hysteresis in resistance is suppressed,and only one peak can be observed.The temperature-dependent magnetization（M-T） curve shows that below the paramagnetic-ferromagnetic transition temperature T_C,a ferromagnetic-canted ferromagnetic transition may occurred.The anomalous temperature-dependent behavior of magnetization may account for the thermal hysteresis of resistance.更多还原