168162 20260127160850.0 sideral 146872 ART-2014-146872 mul Constantinescu, G. (orcid)0000-0002-1614-1962 Influence of Ca substitution by Mg on the Ca3Co 4O9 performances 2014 Ca3-x Mgx Co4 O 9 polycrystalline thermoelectric ceramics with small amounts of Mg have been synthesized by the classical solid state method. Microstructural characterizations have shown that all the Mg has been incorporated into the Ca 3 Co4 O 9 structure and no Mg-based secondary phases have been identified. Apparent density measurements have shown that samples do not modify their density until 0.05 Mg content, decreasing for higher contents. Electrical resistivity decreases and Seebeck coefficient slightly raises when Mg content increases until 0.05 Mg addition. The improvement in both parameters leads to higher power factor values than the usually obtained in samples prepared by the conventional solid state routes and close to those obtained in textured materials. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/T12 info:eu-repo/grantAgreement/ES/DGA/T87 info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 0.29 2014 MATERIALS SCIENCE, CERAMICS 22 / 26 = 0.846 2014 Q4 T3 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Rasekh, S.H. (orcid)0000-0003-3466-9952 Torres, M.A. Universidad de Zaragoza (orcid)0000-0003-3995-5763 Chocarro, C. Díez, J.C. Universidad de Zaragoza (orcid)0000-0001-9995-6368 Madre, M.A. Universidad de Zaragoza (orcid)0000-0002-0794-3998 Sotelo, A. Universidad de Zaragoza (orcid)0000-0001-7056-0546 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. 53, 1 (2014), 41-47 Bol. Soc. Esp. Ceram. Vidr. Boletin de la Sociedad Espanola de Ceramica y Vidrio 0366-3175 1554456 http://zaguan.unizar.es/record/168162/files/texto_completo.pdf Versión publicada 3033183 http://zaguan.unizar.es/record/168162/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:168162 articulos driver 2026-01-27-15:01:37 ARTICLE