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。
（La0.9Bi0.1）2/3Ca1/3MnO3 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 To, a ferromagnetic-canted ferromagnetic transition may occurred. The anomalous temperature-dependent behavior of magnetization may account for the thermal hysteresis of resistance.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2006年第10期1542-1544,共3页
Journal of Functional Materials
基金
国家自然科学基金资助项目(10374044)
