Abstract
We develop a theoretical model for quantitative analysis of temperature-dependent thermoelectric power (S) of La0.67Ba0.33MnO3 manganites. In the ferromagnetic regime, we have evaluated the phonon thermoelectric power by incorporating the scattering of phonons with impurities, grain boundaries, charge careers and phonons. In doing so, we use the Mott expression to compute the electron diffusive thermoelectric power (Scdiff) using Fermi energy as electron-free parameter, Scdiff shows linear temperature dependence and Sphdrag increases exponentially with temperature, which is an artifact of various operating scattering mechanisms. Numerical analysis of thermoelectric power from the present model shows similar results as those revealed from experiments.
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