Transport properties in La0.7-xGdxSr0.3MnO3 system

被引：0
|
作者：
高贵珍
刘宁
郭焕银
蔡之让
童伟
张昌锦
张裕恒
机构：
[1] Department of Physics,Suzhou Advanced Normal College,Suzhou 234000,China
[2] Department of Physics,Suzhou Advanced Normal College,Suzhou 234000,China Structure Research Laboratory,University of Science and Technology of China,Hefei 230026,China
来源：
Science in China(Series G) | 2003年 / 04期
基金：
中国国家自然科学基金;
关键词：
magnetic structure; transport properties; colossal magnetoresistance effect;
D O I：
暂无
中图分类号：
O482 [固体性质];
学科分类号：
070205 ; 0805 ; 080502 ; 0809 ;
摘要：
The influence of Gd doping at La-site on the electrical transport properties and the co-lossal magnetoresistance of LaGdSrMnO（x=0.00,0.10,0.15,0.20,0.30,0.40,0.50,0.60,and 0.70）is studied.The experimental results indicate that the transport properties exhibit abnor-mal behavior under high doping condition.For x=0.50,we find that a transition from metal to in-sulator occurs after the occurrence of insulator-metal transition near To,which seldom occurs inABOstructure.For samples x=0.60 and 0.70,it exhibits insulator behavior far above T.Theseabnormal behaviors are attributed to different magnetic background,i.e.the system undergoes atransition from long range ferromagnetic order to the cluster-spin glass state and further toantiferromagnetic order.
引用
收藏
页码：371 / 381
页数：11
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