Enhanced room-temperature magnetoresistance in La0.7Sr0.3MnO3-glass composites
- 15 January 2001
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 78 (3), 362-364
- https://doi.org/10.1063/1.1342044
Abstract
In this letter, we report the improved magnetotransport properties of La 0.7 Sr 0.3 MnO 3 -borosilicate glass composite with different weight percents of glass. All the composites showed ferromagnetic nature at room temperature. The microstructure of these composites was seen using a scanning electron microscope. The microstructure was reconfirmed using spot energy dispersive x-ray analysis. We observe an enhancement of the low-field magnetoresistance (<200 Oe) at room temperature for the optimal composition of 25 wt % of glass. It is argued that glass layer separating the grain boundaries may be acting as barrier for spin-polarized tunneling, thereby enhancing the low-field magnetoresistance.This publication has 18 references indexed in Scilit:
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