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Abstract: The thermoelectric properties of the Ca1-xGdxMnO3-delta system where x= 0.00, 0.02, and 0.05 were evaluated. It was determined that the sample with the lowest electrical resistivity was the Ca0.95Gd0.05MnO3-delta sample. This result was attributed to the increase content of Mn3+ in the Mn4+ matrix resulting from doping of gadolinium. The dominant charge carriers in all samples were holes, as the thermopower was negative. The highest thermoelectric figure of merit (0.018) was calculated for the Ca0.98Gd0.02MnO3-delta sample.

Reference: The Scientific World Journal, 2012 (2012) 149670

DOI: 10.1100/2012/149670