Sahana, M. ; Hegde, M. S. ; Shivakumara, C. ; Prasad, V. ; Subramanyam, S. V. (1999) Colossal magnetoresistance in potassium doped lanthanum manganite: a comparative study of polycrystalline solid and thin film Journal of Solid State Chemistry, 148 (2). pp. 342-346. ISSN 0022-4596
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00224...
Related URL: http://dx.doi.org/10.1006/jssc.1999.8458
Abstract
Electrical and magnetic properties of La0.82K0.08MnO3-δ, both in polycrystalline and thin film forms, have been examined in the temperature range 1.2 to 300 K. Near the insulator-to-metal transition temperature of 260 K, the magnetoresistance values were higher for the thin film (~70%) compared to the polycrystalline sample (~35%). No magnetoresistance was observed in the thin film at low temperature. A low field magnetoresistance of 30% was observed in the temperature range 1.2-10 K in the polycrystalline sample which can be attributed to the spin dependent scattering of conduction electrons at the grain boundaries.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 15793 |
| Deposited On: | 13 Nov 2010 12:32 |
| Last Modified: | 03 Jun 2011 08:22 |
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