| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1622031 | Journal of Alloys and Compounds | 2009 | 5 Pages |
Abstract
The unusual low-temperature resistivity upturn of composites (1 − x)La0.7Ca0.3MnO3 + xAl2O3 (LCMO/Al2O3) is presented in this paper. The depth of the resistance minima was found to increase with an increased Al2O3 content. We have fitted the resistivity versus temperature data from 5 to 50 K for all samples by an expression containing three terms, namely, inelastic scattering, and electron–electron (e–e) interaction and Kondo effects. We conclude that the e–e interaction effect is the dominant mechanism of LCMO/Al2O3 composites at low-temperature.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
P.T. Phong, N.V. Dai, D.H. Manh, N.V. Khiem, L.V. Hong, N.X. Phuc,