Enhanced field sensitivity close to percolation in magnetoresistive La2/3Sr1/3MnO3/CeO2 composites
- 28 June 1999
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 74 (26), 4014-4016
- https://doi.org/10.1063/1.123245
Abstract
The magnetoresistance of La 2/3 Sr 1/3 MnO 3 / CeO 2 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.Keywords
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