Synthesis and thermoelectric properties of Sr0.95La0.05TiO3−δ -TiO2 solid solutions

Abstract: Sr0.95La0.05TiO3−δ solid solutions, combined with 10mol% TiO2, were prepared at different temperatures. When sintered at a suitable temperature, the Seebeck coefficient presents the same behavior at high temperatures as that of Sr0.95La0.05TiO3−δ ceramic. Otherwise, the Seebeck coefficient would be smaller. After introducing TiO2, both of the thermal and electrical conductivity are reduced. The sample sintered at 1350°C exhibits the highest ZT of about 0.2, which slightly larger than that of Sr0.95La0.05TiO3−δ ceramic. [Copyright &y& Elsevier]