The influence of Gd doping at A site on the magnetic and electrical properties in La0.7Sr0.3MnO3

被引：11
作者：
Liu, N [1 ]
Gao, GZ
Tong, W
Zhang, YH
机构：
[1] Suzhou Teachers Coll, Dept Phys, Suzhou 234000, Peoples R China
[2] Univ Sci & Technol China, Struct Res Lab, Hefei 230026, Peoples R China
来源：
ACTA PHYSICA SINICA | 2003年 / 52卷 / 12期
关键词：
magnetic structure; transport properties; colossal magnetoresistance effect;
D O I：
10.7498/aps.52.3168
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The M-T curves, M-H curves, infrared spectra, Raman spectra, rho-T curves and MR-T curves of La0.7-xGdxSr0.3MnO3 (x =0.00, 0.10, 0.15, 0.20, 0.30, 0.40, 0.56, 0.60, and 0.70) are studied. The experimental results indicate that with increasing Gd doping, the system undergoes a transition from long-range ferromagnetic order to the cluster-spin glass state and further to an antiferromagnetic order. With heavily doping content, the transport property exhibits an abnormal behavior under magnetic background. The variation in magnetic structure and extra magnetic coupling caused by Gd doping lead to colossal magnetoresistance.
引用
收藏
页码：3168 / 3175
页数：8
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