Thermoelectric Properties of Heavily Doped n-Type SrTiO3 Bulk Materials
Three Ta-doped strontium titanates were prepared as potential candidates for n-type thermoelectric oxides. The purity of the polycrystalline samples of SrTi1−x Ta x O3 (x = 0.05 to 0.14) were characterized by means of powder x-ray diffraction and electron probe micro analysis (EPMA). We present the results of Seebeck coefficient, electrical conductivity, and thermal conductivity measurements performed at high temperatures.
KeywordsThermoelectric materials oxides electron probe micro analysis transport properties
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Financial support from Defence Research and Development Canada is greatly appreciated. The work is furthermore supported by the GM and by DOE under corporate agreement DE-FC26-04NT42278, and by the Waste Heat Recovery Program via corporate agreement DE-FC26-04NT42278 at Oak Ridge National Laboratory managed by UT-Battelle LLC, for the Department of Energy under contract DE-AC05000OR22725. Elemental analysis was provided by Richard Waldo.
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