Year: 2011
Type: article
Abstract: Perovskite-type BaSn1-xCoxO3-δ ceramics were prepared by a solid state reaction, and the electrical conductivity σ and Seebeck coefficient S were measured in the temperature range 373-1073 K to evaluate the thermoelectric power factors S2σ. Dense ceramics with relative densities of ∼98 % were obtained by firing at 1573 K for the BaSn1-xCoxO3-δ with x=0.03-0.15. Temperature dependence of σ and S showed that the BaSn1-xCoxO3-δ ceramics with x=0.03-0.15 were p-type semiconductors. A possible origin of the p-type conduction is hopping of holes between localized states of Co ions. The S2σ values were in the orders of 10-11-10-7 Wm-1K-2 and the highest value was 2.7×10-7 Wm-1K-2 at 1073 K for x=0.15.
DOI: 10.2497/jjspm.58.149
Authors: Masahiro Yasukawa, Yukihiro Hamada, Toshio Kono, Kazushige Ueda, Hiroshi Yanagi, Sung Wng Kim, Hideo Hosono
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W1245122913