Synthesis of Y-Doped n-Type SrTiO3 Thermoelectric Oxides by Polymerized Complex Process

Autor:	Mikio Ito, Naoto Ohira
Rok vydání:	2008
Předmět:	Materials science Mechanical Engineering Doping Metallurgy Analytical chemistry Sintering Condensed Matter Physics Hot pressing Polymerization Mechanics of Materials Electrical resistivity and conductivity Seebeck coefficient Thermoelectric effect General Materials Science Perovskite (structure)
Zdroj:	MATERIALS TRANSACTIONS. 49:1844-1847
ISSN:	1347-5320 1345-9678
DOI:	10.2320/matertrans.mra2007322
Popis:	Synthesis of the Y-doped n-type SrTiO3 thermoelectric oxides was tried by the polymerized complex (PC) process and the subsequent hot pressing. The X-ray diffraction patterns of the Sr 1-x Y x TiO 3 powder precursors (0 ≤ x ≤ 0.1) synthesized by the PC process showed that the perovskite SrTiO 3 structure without any second phases was obtained, indicating that the Y-doped SrTiO 3 powder can be fabricated by the PC process, which is a lower temperature process as compared to the conventional solid state reaction (SSR) process. It was found that the perovskite SrTiO 3 structure mostly remained after the sintering by hot pressing. The Sr 0.9 Y 0.1 TiO 3 sample showed the Seebeck coefficient and the electrical resistivity lower than those of the non-doped SrTiO 3 , supporting an increase in carrier concentration due to Y doping. The power factor of the Sr 0.9 Y 0.1 TiO 3 sintered compact was almost the same as that of the Sr 0.9 Y 0.1 TiO 3 prepared by the conventional SSR method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9bad6b65362e459d6faf6fbff044c3d0 https://doi.org/10.2320/matertrans.mra2007322 Zobrazit plný text záznamu