| A位的Sm掺杂对La0.67Sr0.33MnO3体系磁电性质的影响 |
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| 引用本文： | 严国清,刘宁,徐素军,郭焕银,童伟. A位的Sm掺杂对La0.67Sr0.33MnO3体系磁电性质的影响[J]. 兰州大学学报(自然科学版), 2006, 42(2): 47-54 |
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| 作者姓名： | 严国清 刘宁 徐素军 郭焕银 童伟 |
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| 作者单位： | 宿州学院,物理系,安徽,宿州,234000;中国科学技术大学,结构分析开放实验室,安徽,合肥,230026 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，The Natural Science Foundation of the Anhui Higher Education Institutions of China |
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| 摘 要： | 通过实验研究了La0.67-xSmxSr0.33MnO3(x=0.00,0.10,0.20,0.30)体系的M-T曲线、ESR曲线、ρ-T曲线和MR-T曲线.实验结果表明:随着Sm掺杂的增加,体系从长程铁磁有序向自旋团簇玻璃态和反铁磁状态转变,Sm掺杂引起的磁结构变化和额外磁性耦合将导致CMR效应.
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| 关 键 词： | 磁结构 输运行为 庞磁电阻效应 |
| 文章编号： | 0455-2059（2006）02-0047-08 |
| 收稿时间： | 2005-05-17 |
| 修稿时间： | 2005-05-17 |
The influenceof Sm doping at A site on the magnetic,electrical properties in La0.67Sr0.33MnO3 |
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| YAN Guo-qing,LIU Ning,XU Su-jun,GUO Huan-yin,TONG Wei. The influenceof Sm doping at A site on the magnetic,electrical properties in La0.67Sr0.33MnO3[J]. Journal of Lanzhou University(Natural Science), 2006, 42(2): 47-54 |
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| Authors: | YAN Guo-qing LIU Ning XU Su-jun GUO Huan-yin TONG Wei |
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| Affiliation: | 1. Department of Physics, Suzhou College, Suzhou 234000, Anhui, China; 2. Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | The M-T curves,ESR curves,p-T curves and MR-T curves of La_(0.67-x)Sm_xSr_(0.33)MnO_3(x=0, 0.10,0.20,0.30)were measured.The experimental results indicate that,with the increase of Sm doping, the system undergoes a transition from long range ferromagnetic order to the cluster-spin glass state and further to antiferroinagnetic order.The variation in magnetic structure and extra magnetic coupling caused by Sm doping led to colossal magnetoresistance. |
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| Keywords: | magnetic structure transport property colossal magnetoresistance effect |
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