P5.9 - Thermopower and conductivity of aerosol deposited gas sensitive BaFe1-xTax03-films

M. Bektas, T. Stöcker, G. Hagen & R. Moos
In this study, the thermopower and the electrical conductivity of BaFe1-xTaxO3- sensor films were measured for x in the range of 0.1 to 0.45 (BFTx). Seebeck coefficient and conductivity were measured simultaneously between 400 and 850 °C under varying oxygen partial pressures from 10-2 to 1 bar. BFTx fine powders were prepared by a conventional mixed-oxide route. Crystal structure and phase purity were investigated by X-ray diffraction. BFTx thick-films were successfully deposited by the novel...