Thermoelectric properties of SrTiO3 synthesized by the polymerized complex method

The SrTiO₃ and La- and Y-doped SrTiO₃ were synthesized by the polymerized complex (PC) process and the subsequent sintering. The X-ray diffraction patterns of the SrTiO₃, Sr _0.9La_0.1TiO₃ and Sr_0.9Y_0.1TiO₃ powder precursor synthesized by the PC process showed that the perovskite SrTiO₃ structure could be obtained. After the sintering by hot pressing, it was found that the compacts mostly remained to be the perovskite SrTiO₃ structure. The Sr_0.9La_0.1TiO₃ and Sr_0.9Y _0.1TiO₃ samples showed the Seebeck coefficient and the electrical resistivity lower than those of the non-doped SrTiO₃ , indicating an increase in carrier concentration. Besides that, the power factor of the Sr_0.9Y_0.1TiO₃ sintered compact was almost the same as that of the Sr_0.9Y _0.1TiO₃ prepared by the conventional solid state reaction method. Thus, it was found that La- and Y-doped SrTiO₃ were synthesized by the PC process, calcination and hot pressing