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We report the thermal conductivity ( κ ) of perovskite Sr 1− x (La 0.5 Na 0.5 ) x TiO 3  (0 ≤  x  ≤ 1) and the thermoelectric properties of Nb-doped samples for  x  = 0.1 and 0.2. The  κ  of the solid solution shows a distinct minimum near the cubic-tetragonal phase boundary at  x  = 0.2, where the value becomes close to the minimum theoretical  κ . Nb doping to  x  = 0.2 retains the high power factor found in Nb-doped SrTiO 3 , but also raises the  κ  to result in a thermoelectric figure of merit of 0.24 at 773 K.

Thermoelectric properties of Nb-doped Sr1−x (La0.5Na0.5) x TiO3 perovskites

Thermoelectric properties of Nb-doped Sr_1−x(La_0.5Na_0.5)_xTiO₃ perovskites