The influence of Sm doping at A site on the magnetic,electrical properties in La_(0.67)Sr_(0.33)MnO_3

Journal of Lanzhou University Pub Date : 2006-01-01 DOI:10.7498/aps.54.912

Yan Guo-qing

引用次数: 1

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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A位Sm掺杂对La_(0.67)Sr_(0.33)MnO_3磁性、电学性能的影响

测定了La_(0.67-x)Sm_xSr_(0.33)MnO_3(x=0, 0.10,0.20,0.30)的M-T曲线、ESR曲线、p-T曲线和MR-T曲线。实验结果表明，随着Sm掺杂量的增加，体系经历了从长程铁磁有序态到团旋玻璃态的转变，并进一步向反铁磁有序态转变。钐掺杂引起的磁结构变化和额外的磁耦合导致了巨大的磁阻。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Lanzhou University

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