Title :
Thermoelectric properties of SrTiO3 synthesized by the polymerized complex method
Author :
Ito, Mikio ; Minami, Masahiro ; Katsuyama, Shigeru
Author_Institution :
Course of Mater. Sci. & Eng., Osaka Univ., Suita
Abstract :
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 0.9La0.1TiO3 and Sr0.9Y0.1TiO3 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 Sr0.9La0.1TiO3 and Sr0.9Y 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 Sr0.9Y0.1TiO3 sintered compact was almost the same as that of the Sr0.9Y 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
Keywords :
Seebeck effect; X-ray diffraction; calcination; carrier density; electrical resistivity; hot pressing; lanthanum; sintering; strontium compounds; titanium compounds; yttrium; Seebeck coefficient; Sr0.9La0.1TiO3; Sr0.9Y0.1TiO3; SrTiO3:La; SrTiO3:Y; X-ray diffraction; calcination; carrier concentration; electrical resistivity; hot pressing; perovskite structure; polymerized complex method; sintering; thermoelectric property; Calcination; Electric resistance; Polymers; Powders; Pressing; Reactive power; Solid state circuits; Strontium; Thermoelectricity; X-ray diffraction;
Conference_Titel :
Thermoelectrics, 2006. ICT '06. 25th International Conference on
Conference_Location :
Vienna
Print_ISBN :
1-4244-0811-3
Electronic_ISBN :
1094-2734
DOI :
10.1109/ICT.2006.331394
