| Autor: |
Kurkin, M., Neifel’d, E., Korolev, A., Ugryumova, N., Gudin, S., Gapontseva, N. |
| Zdroj: |
Physics of the Solid State; May 2013, Vol. 55 Issue: 5 p974-976, 3p |
| Abstrakt: |
Precision resistive and magnetic measurements of the La0.85Ba0.15MnO3manganite with activation-type conductivity have been performed. Based on the experimental data, a mechanism has been proposed, which is sufficient for a quantitative description of the magnetoresistance below the Curie temperature TC. The proposed mechanism predicts a considerable enhancement in the magnetoresistance near TCowing to an increase in the magnetic susceptibility. This implies that this mechanism can at least in part participate in the formation of colossal magnetoresistance. It has been concluded that all other mechanisms responsible for the effect of colossal magnetoresistance occur only near TC. This restriction determines the specificity of the new approach to the problems of colossal magnetoresistance in lanthanum manganites. |
| Databáze: |
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| Externí odkaz: |
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