Transport mechanism in polycrystalline La0.825Sr0.175Mn1-xCuxO3

被引：152

作者：

Pi, L ^{[1
]}

Zheng, L ^{[1
]}

Zhang, YH ^{[1
]}

机构：

[1] Univ Sci & Technol China, Struct Res Lab, Acad Sinica, Hefei 230026, Peoples R China

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.61.8917

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The transport mechanism of polycrystalline samples La0.825Sr0.175Mn1-xCuxO3 (0 less than or equal to x less than or equal to 0.20) and the effects of Cu doping have been investigated. It can be concluded that the existence of Cu induces the superexchange interaction and weakens the long range ferromagnetic order in the samples. The transport mechanism in the metallic regime is attributed to the magnon-carrier scattering and the transport mechanism in the insulating regime transits from polaron transport to variable-range hopping with the adding of Cu. The effect of the surface phase is also observed in the samples.

引用

页码：8917 / 8921

页数：5

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