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High temperature spark plasma sintering, a fast and one step route to achieve dense and efficient \(\text {SrTiO}_3\)-based thermoelectric ceramics

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Abstract

\((\text {Sr}_{0.95}\text {La}_{0.05})_{0.95}\square _{0.05}\text {TiO}_3\) ceramics were prepared by solid state reaction and sintered by spark plasma sintering at different temperatures ranging from 1473 to 1873 K for 10 min. The thermoelectric properties show that sintering at temperatures higher than 1773 K allows reaching high thermoelectric properties similar to the ones obtained after annealing at high temperatures in \(\text {H}_2/\text {N}_2\) for several hours. The high temperature sintered samples exhibit highest power factor near room temperature, resulting in ZT values higher than 0.1. Therefore, the 10 min short SPS process at high temperatures described in this paper is an easy, cheap, fast, and one step route to obtain dense and efficient \(\text {SrTiO}_3\)-based thermoelectric ceramics. However, SEM observations show that the samples are not pure perovskite phase but contain titanium oxide and lanthanum compound aggregates.

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Acknowledgements

The authors are grateful to Tatiana Chartier for technical support.

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Authors and Affiliations

  1. Université de Tours, CNRS, INSA CVL, GREMAN UMR 7347, IUT de Blois 15 rue de la chocolaterie, 41029, Blois Cedex, France

    Eliane Bsaibess, Fabian Delorme, Mustapha Zaghrioui & Fabien Giovannelli

  2. Sciences and Engineering Department, Sorbonne University Abu Dhabi, Al Reem Island, PO Box 38044, Abu Dhabi, United Arab Emirates

    Eliane Bsaibess

  3. French-German Research Institute of Saint-Louis, 5 rue du Général Cassagnou, BP 70034, 68301, Saint Louis Cedex, France

    Florence Moitrier, Thierry Bourré & Fabian Delorme

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  1. Eliane Bsaibess
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Bsaibess, E., Moitrier, F., Bourré, T. et al. High temperature spark plasma sintering, a fast and one step route to achieve dense and efficient \(\text {SrTiO}_3\)-based thermoelectric ceramics. Eur. Phys. J. Spec. Top. 231, 4195–4204 (2022). https://doi.org/10.1140/epjs/s11734-022-00575-w

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