Year: 2014
Type: article
Abstract: In the oxide system of Bi–Sr–Co glass melts have been prepared by adding a small amount of glass formers. A crystallization leads to crystalline phases of Bi 8 Sr 8 Co 4 O 25 , BiSrCo 2 O x and Bi 2 Sr 2 Co 2 O 9 (BC-222) densely embedded into a residual glass phase. This work shows the possibility of obtaining microstructured bulk material with low thermal conductivity and relatively high electrical conductivity via such a glass ceramic approach. Furthermore the stability of these materials under thermal cycling for temperatures up to 700 °C is shown. A characterization of the thermoelectric properties leads to a figure of merit (ZT) between 0.008 and 0.018.
Institutions: Schott (Germany), Johannes Gutenberg University Mainz
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2254536002