Enhanced field sensitivity close to percolation in magnetoresistive La2/3Sr1/3MnO3/CeO2 composites

被引：233

作者：

Balcells, L ^{[1
]}

Carrillo, AE ^{[1
]}

Martínez, B ^{[1
]}

Fontcuberta, J ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat Barcelona, E-08193 Bellaterra, Catalunya, Spain

来源：

APPLIED PHYSICS LETTERS | 1999年 / 74卷 / 26期

关键词：

D O I：

10.1063/1.123245

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetoresistance of La2/3Sr1/3MnO3/CeO2 composites is explored as a function of the metal/insulator composition, temperature, and magnetic field. An important enhancement of the low-field magnetoresistance is observed for samples close to metallic percolation threshold. The improved field sensitivity is still fairly large at room temperature. Manganese perovskites composites may constitute a new alternative for the development of magnetoresistive devices. (C) 1999 American Institute of Physics. [S0003-6951(99)00926-2].

引用

页码：4014 / 4016

页数：3

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