稀土锰氧化物Nd_(0.5)Sr_(0.4)Ca_(0.1)MnO_3的磁性研究  

Study of the Magnetic Properties of the Monolayer Nd_(0.5)Sr_(0.4)Ca_(0.1)MnO_3 Manganites

作　　者：邢茹[1] 鲁毅[1] 赵建军[1] 郑琳[1] 

机构地区：[1]内蒙古科技大学包头师范学院物理系,内蒙古包头014030

出　　处：《稀土》2009年第6期64-66,共3页Chinese Rare Earths

基　　金：国家自然科学基金项目资助(50862007);内蒙古自治区科学基金项目资助(200607010102)

摘　　要：通过XRD和SQUID研究了Nd0.5Sr0.4Ca0.1MnO3多晶样品的结构和磁性。研究结果表明,该样品单相性好,空间群为Pbnm,在高温区呈现顺磁性,随着温度降低出现了顺磁-反铁磁的转变,相变温度点-奈尔温度(TN=200K),当温度低于200K时,铁磁与反铁磁两相共存,温度低于150K时铁磁逐渐消失,直到完全变为反铁磁。Crystalline structure and magnetic properties of the Nd0.5Sr0.4Ca0.1MnO3 were investigated by using XRD and SQUID.XRD result shows that the material exhibits a pervoskite structure（space group Pbnm）,SQUID result indicated the sample shows a paramagnetic behavior without any asymmetry and secondary phase at temperature higher than 200K（TN=200K）,a paramagtic-antiferamagnetic behavior at temperature lower than 200K,and a behavior of paramaqnetic phase disappearing gradually at temperature below 150K.

关 键 词：电荷有序 相分离 XRD 超导量子磁强计 

分 类 号：O482.52[理学—固体物理] O614.33[理学—物理]