168085 20260217205612.0 sideral 146857 ART-2024-146857 eng Amirkhizi, P. Effect of B-site doping on the thermoelectric performances of Ca0.97Y0.01 La0.01 Yb0.01Mn1-2xNbxMoxO3 thermoelectric ceramics 2024 Access copy available to the general public Unrestricted A-, and B-site multiple-doped Ca0.97Y0.01La0.01Yb0.01Mn1–2xNbxMoxO3 was studied for improving its thermoelectric thermoelectric performance. Samples were prepared from planetary milled precursors and sintered at 1310ºC for 12 h. XRD showed that sintered samples are nearly single phase, with small amounts of CaMn2O4. SEM analysis revealed that grain size decreases with Nb and Mo content, leading to lowered electrical resistivity, reaching 6.1 mΩ cm at 800ºC in x = 0.03 samples, 60% lower than that of pristine samples. The highest Seebeck coefficient for doped samples has been obtained for x = 0.005, 210μV/K at 800ºC. A high power factor (0.46 mW/K2 m at 800ºC) has been reached for x = 0.01 samples. However, thermal conductivity did not significantly vary with composition, leading to ZT∼0.27 at 800ºC for x = 0.005 samples, among the best reported in the literature. These results suggest that multi-doping approach opens new paths for integrating calcium manganite-based materials in thermoelectric modules for power generation at high temperatures. info:eu-repo/grantAgreement/ES/DGA/T54-23R info:eu-repo/grantAgreement/ES/UZ/JIUZ-2022-IAR-09 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 6.2 2024 MATERIALS SCIENCE, CERAMICS 2 / 34 = 0.059 2024 Q1 T1 1.3 2024 Materials Chemistry 2024 Q1 Ceramics and Composites 2024 Q1 11.5 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Torres, M.A. Universidad de Zaragoza (orcid)0000-0003-3995-5763 Dura, O.J. Sotelo, A. Universidad de Zaragoza (orcid)0000-0001-7056-0546 Madre, M.A. Universidad de Zaragoza (orcid)0000-0002-0794-3998 Kovalevsky, A. Rasekh, Sh. (orcid)0000-0003-3466-9952 5002 305 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Expresión Gráfica en Ing. 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 44, 5 (2024), 2982-2988 J. Eur. Ceram. Soc. Journal of the European Ceramic Society 0955-2219 2389828 http://zaguan.unizar.es/record/168085/files/texto_completo.pdf Versión publicada 2620089 http://zaguan.unizar.es/record/168085/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:168085 articulos driver 2026-02-17-20:49:26 ARTICLE