Influence Of Zro2 Nanoparticles Dispersion On The Structural, Electrical And Thermal Properties Of Ca0.9sr0.1mno3

(1-x)Ca0.9Sr0.1MnO3-(x)ZrO2 (x = 0, 0.05, 0.1, 0.15, 0.2) nanocomposites powders were synthesized through solid state mixing method followed by sintering at 1123 K for 8 h. Phase confirmation, morphology, elemental composition, and thermal properties were carried out by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and thermal expansion analysis. Electrical resistivity measurements were carried out on sintered pellets using dc four probes method in the temperature range of 303-673 K revealed the semiconductor nature of all samples. The nanoinclusions also gave effect to increase the seebeck coefficient values in the range temperature of 330-700 K. Nanocomposites samples possess higher power factor compare with single phase Ca0.9Sr0.1MnO3. The increment of power factor values of nanocomposites are 84%, 124%, 124% and 140% for 5 wt%, 10 wt%, 15 wt% and 20 wt% of ZrO2 respectively. Therefore, ZrO2 nanoparticles dispersion could be an alternative way to improve the thermoelectric performance of Ca0.9Sr0.1MnO3.