High-temperature transport properties of La0.67Ca0.33MnO3 films

被引：2

作者：

Westerburg, W ^{[1
]}

Jakob, G ^{[1
]}

Martin, F ^{[1
]}

Adrian, H ^{[1
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1999年 / 196卷

关键词：

colossal magnetoresistance; perovskites; magnetic oxides; polaron;

D O I：

10.1016/S0304-8853(98)00882-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The giant negative magnetoresistance in manganites has been investigated from the Curie temperature T-c up to 600 K (2.6 T-c) in magnetic fields up to 8 T. Nonadiabatic small polaron hopping can successfully describe the temperature dependence of the resistivity. The magnetic field influence on the activation energy is explained by the interaction of unclustered ions with small spin clusters of four ions. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：536 / 538

页数：3

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