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

Sr0.95La0.05TiO3−δ solid solutions, combined with 10 mol% 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.

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