168063 20260126155509.0 sideral 146859 ART-2013-146859 eng Constantinescu, G. (orcid)0000-0002-1614-1962 Effect of Sr substitution for Ca on the Ca3Co4O 9 thermoelectric properties 2013 Ca3−xSrxCo4O9 polycrystalline thermoelectric ceramics with small amounts of Sr have been synthesized by the classical solid state method. Microstructural characterizations have shown that all the Sr has been incorporated into the Ca3Co4O9 and Ca3Co2O6 structures and no Sr-based secondary phases have been produced. Apparent density measurements have shown that samples slightly increase their density until 0.05 Sr content, decreasing for higher contents. Electrical resistivity decreases and Seebeck coefficient slightly raises when Sr content increases until 0.07 Sr 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 2.726 2013 MATERIALS SCIENCE, MULTIDISCIPLINARY 49 / 246 = 0.199 2013 Q1 T1 METALLURGY & METALLURGICAL ENGINEERING 5 / 75 = 0.067 2013 Q1 T1 CHEMISTRY, PHYSICAL 53 / 134 = 0.396 2013 Q2 T2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Rasekh, Sh. (orcid)0000-0003-3466-9952 Torres, M.A. Universidad de Zaragoza (orcid)0000-0003-3995-5763 Diez, 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. 577 (2013), 511-515 J. alloys compd. JOURNAL OF ALLOYS AND COMPOUNDS 0925-8388 903278 http://zaguan.unizar.es/record/168063/files/texto_completo.pdf Postprint 1149734 http://zaguan.unizar.es/record/168063/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:168063 articulos driver 2026-01-26-14:49:34 ARTICLE