G. Rohrer—contributing editor
Spark Plasma Sintering of n-Type Thermoelectric Ca0.95Sm0.05MnO3
Article first published online: 24 MAR 2011
© 2011 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 8, pages 2608–2612, August 2011
How to Cite
Noudem, J. G., Kenfaui, D., Quetel-Weben, S., Sanmathi, C. S., Retoux, R. and Gomina, M. (2011), Spark Plasma Sintering of n-Type Thermoelectric Ca0.95Sm0.05MnO3. Journal of the American Ceramic Society, 94: 2608–2612. doi: 10.1111/j.1551-2916.2011.04465.x
The authors acknowledge the FEDER, CNRS, and CRBN for their financial participation (CPER 2007-2013) to the experimental set-up used in this work.
- Issue published online: 9 AUG 2011
- Article first published online: 24 MAR 2011
- Manuscript No. 28264. Received July 12, 2010; approved January 23, 2011.
Nanoceramic powders of n-type Ca0.95Sm0.05MnO3 (CSM) were synthesized by the coprecipitation method. Spark plasma sintering (SPS) technique was successfully used to densify granular n-type CSM oxides and control their nanostructure. Thermoelectric (TE) properties were measured and their dependence upon processing conditions was evidenced. SPS enables rapid sintering and better TE properties due to the strong densification and the grain size control. The power factor reached 306 μW·(m·K2)−1 at 600°C. These results contrast with those obtained by the conventional sintering (CS) method, where only 228 μW·(m·K2)−1 obtained at the same temperature. The mechanical properties of granular n-type CSM ceramics processed by SPS and CS were also investigated and compared.