000079063 001__ 79063
000079063 005__ 20240104111807.0
000079063 0247_ $$2doi$$a10.1016/j.ceramint.2018.04.071
000079063 0248_ $$2sideral$$a105813
000079063 037__ $$aART-2018-105813
000079063 041__ $$aeng
000079063 100__ $$0(orcid)0000-0001-7056-0546$$aSotelo, A.$$uUniversidad de Zaragoza
000079063 245__ $$aEffect of simultaneous K, and Yb substitution for Ca on the microstructural and thermoelectric characteristics of CaMnO3 ceramics
000079063 260__ $$c2018
000079063 5060_ $$aAccess copy available to the general public$$fUnrestricted
000079063 5203_ $$aCaMnO3-based materials are very attractive among n-type thermoelectric oxides for high-temperature applications when they are appropriately doped. The main drawback of these materials is the cost associated to the necessary rare earth cations. This work aims decreasing the amount of these materials through a partial substitution of Ca2+ by an equimolar mixture of K+ and Yb3+, Ca1-x(K0.5Yb0.5)xMnO3, with x = 0.05, 0.10, 0.15, and 0.20. XRD studies have confirmed that the thermoelectric phase is the major one in all samples. Microstructure has shown the formation of large crystals, and an increasing porosity when the substitution is raised. This evolution has been confirmed through density measurements. Electrical resistivity has been drastically decreased for the 0.10 substituted samples, compared with the 0.05 ones, slightly increasing for higher substitution. On the other hand, absolute Seebeck coefficient and thermal conductivity are lower when the substitution is raised. The best ZT values have been achieved for the 0.10 substituted samples, which are around the typical reported in the literature for higher doping level. These results clearly point out to a decrease of the necessary rare earth dopant content to achieve similar performances in CaMnO3 ceramics, which is of the main economic significance for their industrial production.
000079063 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FEDER/T12$$9info:eu-repo/grantAgreement/ES/DGA-FEDER/T87$$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2017-82183-C3-1-R$$9info:eu-repo/grantAgreement/ES/UZ/UZ2017-TEC-03
000079063 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000079063 590__ $$a3.45$$b2018
000079063 591__ $$aMATERIALS SCIENCE, CERAMICS$$b2 / 28 = 0.071$$c2018$$dQ1$$eT1
000079063 592__ $$a0.888$$b2018
000079063 593__ $$aElectronic, Optical and Magnetic Materials$$c2018$$dQ1
000079063 593__ $$aCeramics and Composites$$c2018$$dQ1
000079063 593__ $$aSurfaces, Coatings and Films$$c2018$$dQ1
000079063 593__ $$aProcess Chemistry and Technology$$c2018$$dQ1
000079063 593__ $$aMaterials Chemistry$$c2018$$dQ1
000079063 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000079063 700__ $$aDepriester, M.
000079063 700__ $$0(orcid)0000-0003-3995-5763$$aTorres, M.A.$$uUniversidad de Zaragoza
000079063 700__ $$aSahraoui, A.H.
000079063 700__ $$0(orcid)0000-0002-0794-3998$$aMadre, M.A.$$uUniversidad de Zaragoza
000079063 700__ $$0(orcid)0000-0001-9995-6368$$aDiez, J.C.$$uUniversidad de Zaragoza
000079063 7102_ $$15002$$2305$$aUniversidad de Zaragoza$$bDpto. Ingeniería Diseño Fabri.$$cÁrea Expresión Gráfica en Ing.
000079063 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000079063 773__ $$g44, 11 (2018), 12697-12701$$pCeram. int.$$tCeramics International$$x0272-8842
000079063 8564_ $$s184132$$uhttps://zaguan.unizar.es/record/79063/files/texto_completo.pdf$$yPostprint
000079063 8564_ $$s94218$$uhttps://zaguan.unizar.es/record/79063/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000079063 909CO $$ooai:zaguan.unizar.es:79063$$particulos$$pdriver
000079063 951__ $$a2024-01-04-11:00:50
000079063 980__ $$aARTICLE