Abstract
Ac susceptibility and thermoelectric power properties of bulk La0.90Li0.10-xNaxMnO3 (0 ≤ x ≤ 0.10 at. %, step 0.02 at. %) compounds have been studied. The temperature dependence of the ac susceptibility measurements showed a cusp and shoulder below Curie temperature (TC) related to a frequency-independent and dependent peak in χ″ (T) curves respectively. Slower spin dynamics and the cluster sizes augment with increases the Na content. In terms of magneto-transport a properties, a peak is observed in vicinity of Tms transition, which it has industrial applications. The thermoelectric power data analyzed at low temperature by the magnon and phonon drag concept, while at high temperature by small polaron conduction mechanism. We found an unexpected correlation of structures in MR (T) and S(T) curves.
Published Version
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