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- Title
Thermoelectric sintered glass-ceramics with a BiSrCoO phase.
- Authors
Lingner, Julian; Funahashi, Ryoji; Combe, Emmanuel; Letz, Martin; Jakob, Gerhard
- Abstract
Glass-ceramic materials containing BiSrCoO crystals with plate-like structures are prepared by a melting process and a subsequent sintering step after manual quenching. The chemical starting compositions of the samples are BiSrCoO (BSC222), BiSrCoO (Bi1.8) and BiSrCoO (Co1.7). All three samples are p-type conductors. The electric properties of Seebeck coefficient S and electrical resistivity ρ show only a slight dependence on chemical composition. The Seebeck values increase with increasing temperature, and at T = 873 K, they reach S = 180, 176 and 167 µV/K, respectively. The electrical resistivity slightly decreases with temperature for two samples and increases for the Co1.7 sample. The thermal conductivity for all measured samples at this temperature is around κ = 0.8 W/(m K). The figure of merit ZT increases with temperature for all samples. The materials reach a ZT value of 0.03 at T = 873 K.
- Subjects
THERMOELECTRIC materials; SINTERING; GLASS-ceramics; BISMUTH compounds; MELTING
- Publication
Applied Physics A: Materials Science & Processing, 2015, Vol 120, Issue 1, p59
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-015-9169-1