Singh, Ajay ; Aswal, D. K. ; Viswanadham, C. S. ; Goswami, G. L. ; Gupta, L. C. ; Gupta, S. K. ; Yakhmi, J. V. (2002) Enhanced magnetoresistance in nanocrystalline La0.6Pb0.4MnO3 thin films Journal of Crystal Growth, 244 (3-4). pp. 313-317. ISSN 0022-0248
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00220...
Related URL: http://dx.doi.org/10.1016/S0022-0248(02)01699-8
Abstract
The nanocrystalline La0.6Pb0.4MnO3 thin films have been grown on (1 0 0) SrTiO3 substrates using pulsed-laser ablation technique. The atomic force microscopy and X-ray diffraction measurements show that the films consist of single-crystalline grains of an average size of ~17 nm with c-axis perpendicular to the substrate plane. These nanocrystalline films exhibit an enhanced magnetoresistance of >100% at 1 T in the vicinity of the Curie temperature. Magnetization data suggest that grain boundaries act as tunnel barriers leading to an enhancement in the magnetoresistance.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | A1. Atomic Force Microscopy; A1. X-ray Diffraction; A3. Laser Epitaxy; B1. Colossal Magnetoresistive Material; B2. Nanocrystalline Films |
| ID Code: | 11325 |
| Deposited On: | 09 Nov 2010 03:34 |
| Last Modified: | 16 May 2016 20:47 |
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