Synthesis and thermoelectric properties of Sr_0.95La0.05TiO_(3-delta)-TiO_2 solid solutions

摘要

Sr_0.95La0.05TiO_(3-delta) solid solutions, combined with 10 molpercent TiO_2, were prepared at different temperatures. When sintered at a suitable temperature, the Seebeck coefficient presents the same behavior at high temperatures as that of Sr0.95Lao.o5Ti03_a ceramic. Otherwise, the Seebeck coefficient would be smaller. After introducing TiO_2, both of the thermal and electrical conductivity are reduced. The sample sintered at 1350 degC exhibits the highest ZT of about 0.2, which slightly larger than that of Sr_0.95La0.05TiO_(3-delta) ceramic.