Category: Transient Plane Source
Author(s): Ankam Bhaskar, Chia-Jyi Liu, Y.-C. Huang
Keywords: electrical resistance, iodometric titration, thermal conductivity, thermoelectric materials, thermopower, transient plane source technique, x-ray diffraction, x-ray diffraction (xrd), xrd
Abstract: The low-temperature thermoelectric properties of Ca3-xYbxCo4O9+delta systems (x = 0, 0.02, 0.05, and 0.10). It was determined that these systems produced positive thermopower, indicating that the dominant carriers were holes. The electrical resistivity and thermopower were found to increase with increasing Yb3+ content, and the thermal conductivity was found to decrease. The highest calculated thermoelectric figure of merit was 0.037, and this was calculated for the Ca2.95Yb0.05Co4O9+delta sample.
Reference: Ceramics International 40 (2014) 5937–5943
DOI: 10.1016/j.ceramint.2013.11.040