Sundar Manoharan, S. ; Hegde, M. S. ; Satyalakshmi, K. M. ; Prasad, V. ; Subramanyam, S. V. (1996) Metal-insulator transition and giant magnetoresistance in La1-x MnO3-δ thin films and superlattices Thin Solid Films, 275 (1-2). pp. 244-246. ISSN 0040-6090
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/004060...
Related URL: http://dx.doi.org/10.1016/0040-6090(95)08024-4
Abstract
The first fabrication of self-doped La1-xMnO3-δ films which are unique among the other La1-xMxMnO3 (M = Ca, Ba and Pb) thin films showing giant magnetoresistance is reported. Ag-doped La0.7MnO3-δ films were grown on LaAlO3100 substrates. These films show ferromagnetic and metal-insulator transition at 220 K and exhibit giant magnetoresistance (GMR) with ΔR/Ro = 85% and ΔR/RH > 550%. Without silver addition these self-doped films are non-magnetic. Enhancement in GMR up to 8% has been observed in superlattices having alternate magnetic and non-magnetic La1-xMnO3-δ layers.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Magnetic Properties and Measurements; Metals; Insulators; Superlattices |
| ID Code: | 15802 |
| Deposited On: | 13 Nov 2010 12:31 |
| Last Modified: | 03 Jun 2011 08:30 |
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