000168152 001__ 168152 000168152 005__ 20260128112906.0 000168152 0248_ $$2sideral$$a146870 000168152 037__ $$aART-2018-146870 000168152 041__ $$aeng 000168152 100__ $$aÇetin Karakaya, G. 000168152 245__ $$aImprovement of Bi2Sr2Co2Oy thermoelectric performances by Na doping 000168152 260__ $$c2018 000168152 5060_ $$aAccess copy available to the general public$$fUnrestricted 000168152 5203_ $$aBi2Sr2-xNaxCo2Oy thermoelectric materials with x = 0, 0.025, 0.05, 0.075, 0.10, 0.125, and 0.15 have been prepared by the classical solid state reaction. Microstructure has shown an important grain growth when Na is added, leading to very high bulk densities confirmed through density measurements. These modifications have produced a drastic decrease of electrical resistivity without significant modification of Seebeck coefficient. As a consequence, Power Factor has been increased in all Na-doped samples, reaching the maximum value (0.21 mW/K2.m at 650 °C) for 0.075 Na samples, which is fairly close to the reported for single crystals. 000168152 536__ $$9info:eu-repo/grantAgreement/ES/DGA/T12$$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2013-46505-C3-1-R 000168152 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000168152 590__ $$a1.966$$b2018 000168152 591__ $$aMATERIALS SCIENCE, CERAMICS$$b8 / 28 = 0.286$$c2018$$dQ2$$eT1 000168152 592__ $$a0.511$$b2018 000168152 593__ $$aElectrical and Electronic Engineering$$c2018$$dQ2 000168152 593__ $$aElectronic, Optical and Magnetic Materials$$c2018$$dQ2 000168152 593__ $$aMechanics of Materials$$c2018$$dQ2 000168152 593__ $$aCondensed Matter Physics$$c2018$$dQ2 000168152 593__ $$aMaterials Chemistry$$c2018$$dQ2 000168152 593__ $$aCeramics and Composites$$c2018$$dQ2 000168152 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000168152 700__ $$aOzçelik, Bekir 000168152 700__ $$aNane, O. 000168152 700__ $$0(orcid)0000-0001-7056-0546$$aSotelo, A.$$uUniversidad de Zaragoza 000168152 700__ $$0(orcid)0000-0003-3466-9952$$aRasekh, Sh. 000168152 700__ $$0(orcid)0000-0003-3995-5763$$aTorres, M.A.$$uUniversidad de Zaragoza 000168152 700__ $$0(orcid)0000-0002-0794-3998$$aMadre, M.A.$$uUniversidad de Zaragoza 000168152 7102_ $$15002$$2305$$aUniversidad de Zaragoza$$bDpto. Ingeniería Diseño Fabri.$$cÁrea Expresión Gráfica en Ing. 000168152 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal. 000168152 773__ $$g40, 1 (2018), 11-15$$pJ. Electroceram.$$tJOURNAL OF ELECTROCERAMICS$$x1385-3449 000168152 8564_ $$s619312$$uhttps://zaguan.unizar.es/record/168152/files/texto_completo.pdf$$yPostprint 000168152 8564_ $$s1342478$$uhttps://zaguan.unizar.es/record/168152/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000168152 909CO $$ooai:zaguan.unizar.es:168152$$particulos$$pdriver 000168152 951__ $$a2026-01-28-11:25:10 000168152 980__ $$aARTICLE