Venimadhav, A. ; Hegde, M. S. ; Rawat, R. ; Das, I. ; El Marssi, M. (2001) Enhancement of magnetoresistance in La0.67Ca0.33MnO3/Pr0.7Ca0.3MnO3 epitaxial multilayers Journal of Alloys and Compounds, 326 (1-2). pp. 270-274. ISSN 0925-8388
Full text not available from this repository.
Official URL: http://linkinghub.elsevier.com/retrieve/pii/S09258...
Related URL: http://dx.doi.org/10.1016/S0925-8388(01)01319-6
Abstract
Multilayers of perovskite manganite oxides La0.67Ca0.33MnO3/Pr0.7Ca0.3MnO3, La0.67Ca0.33MnO3/LaMnO3 have been fabricated by pulsed laser deposition. Magnetoresistance (defining R(0)-R(H)/R(0)) of 98% has been observed in multilayers with Pr0.7Ca0.3MnO3 as the spacer layer. No enhancement is observed in multilayers with LaMnO3 as the spacer layer. Enhanced magnetoresistance in La0.67Ca0.33MnO3/Pr0.7Ca0.3MnO3 multilayers is explained on the basis of induced double exchange in the Pr0.7Ca0.3MnO3 layer as Mn exists both in 3+ and 4+ states. Such a facility does not exist in La0.67Ca0.33MnO3/LaMnO3 as Mn is present only in the 3+ state in LaMnO3.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Manganite; Spacer Layer; Multilayer; Magnetoresistance; Double Exchange |
| ID Code: | 15808 |
| Deposited On: | 13 Nov 2010 12:30 |
| Last Modified: | 03 Jun 2011 08:18 |
Repository Staff Only: item control page
