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Magnetization of Bi0:9-xGdxLa0:1FeO3 System
Xue-qin Xu ,Tian Qian ,Tao-fei Zhou ,Guang Li ,Xiao-guang Li*
Author NameAffiliation
Xue-qin Xu Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, China 
Tian Qian Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, China 
Tao-fei Zhou Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, China 
Guang Li Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, China 
Xiao-guang Li* Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, China 
Abstract:
Magnetization of Bi0:9-xGdxLa0:1FeO3 (x=0.3, 0.5, 0.6 and 0.7) is reported. An abnormal negative magnetization appears in the temperature-dependent magnetization curves, and the temperature-dependent coercive field shows a maximum in the vicinity of the compensation temperature where the total magnetization is zero. These results suggest that in the ferrimagnetic-like Bi0:9-xGdxLa0:1FeO3 system the Gd and Fe magnetic sublattices are coupled antiferromagnetically.
Key words:  Multiferroic materials, Negative magnetization, Ferrimagnetic
FundProject:
Bi0:9-xGdxLa0:1FeO3的磁性
许雪芹,钱天,周桃飞,李广,李晓光*
摘要:
详细地研究了Bi0:9-xGdxLa0:1FeO3 (x=0.3,0.5,0.6和0.7)的磁化强度(M)和矫顽场随温度(T)的变化. 实验发现, 在一定温度范围内,M-T曲线上出现异常的负磁矩; 矫顽场与温度的关系不是单调变化的, 而是在温度补偿点到最大值. 这些结果表明Bi0:9-xGdxLa0:1FeO3体系中Gd和Fe磁晶格呈反铁磁耦合.但由于Gd离子和Fe离子的磁矩不相等,导致该体系中存在亚铁磁性.
关键词:  多铁性材料,负磁矩,亚铁磁性
DOI:10.1360/cjcp2007.20(1).1.4
分类号: