Gupta, S. ; Ranjit, R. ; Mitra, C. ; Raychaudhuri, P. ; Pinto, R. (2001) Enhanced room-temperature magnetoresistance in La0.7Sr0.3MnO3-glass composites Applied Physics Letters, 78 (3). pp. 362-364. ISSN 0003-6951
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Official URL: http://aip.scitation.org/doi/abs/10.1063/1.1342044
Related URL: http://dx.doi.org/10.1063/1.1342044
Abstract
In this letter, we report the improved magnetotransport properties of La0.7Sr0.3MnO3-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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| ID Code: | 105013 |
| Deposited On: | 25 Dec 2017 10:59 |
| Last Modified: | 25 Dec 2017 10:59 |
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