000130217 001__ 130217
000130217 005__ 20241125101151.0
000130217 0247_ $$2doi$$a10.1016/j.jallcom.2023.170201
000130217 0248_ $$2sideral$$a133639
000130217 037__ $$aART-2023-133639
000130217 041__ $$aeng
000130217 100__ $$0(orcid)0000-0002-0794-3998$$aMadre, M. A.$$uUniversidad de Zaragoza
000130217 245__ $$aEffect of Y, La, and Yb simultaneous doping on the thermal conductivity and thermoelectric performances of CaMnO3 ceramics
000130217 260__ $$c2023
000130217 5060_ $$aAccess copy available to the general public$$fUnrestricted
000130217 5203_ $$aTriple doping of CaMnO3 in different stoichiometric proportions has been studied in bulk sintered materials. They were prepared through the classical ceramic route using planetary milling to decrease the precursors particle sizes. It has been found that particle sizes decrease with the amount of dopant, both in the precursors and in the sintered bodies. XRD patterns showed that all samples were nearly single phase, with small amounts of CaMn2O4 phase. SEM and TEM observations revealed a homogeneous distribution of dopants in the CaMnO3 phase, while EDX showed a composition close to the nominal one. However, HREM imaging has shown some dark regions in the crystallites, with different Ca(Y,La,Yb)/Mn ratios found through STEM image-chemical mapping, which points out to the coexistence of CaMnO3 and CaMn2O4–type domains in the crystallites. Electrical resistivity, absolute Seebeck coefficient and thermal conductivity have been drastically decreased with doping. The highest PF values at 800 ºC have been achieved in 0.02(Y,La,Yb) doped samples (∼ 0.37 mW/K2m), which is among the best reported values in literature. On the other hand, lattice thermal conductivity is dramatically decreased with doping due to the phonon scattering produced by the dopants, the decrease in the grain sizes, and the strains present inside the crystallites, reaching the minimum values at 800 ºC in 0.03(Y,La,Yb) doped samples (∼ 0.8 W/K m). Consequently, ZT reaches the maximum values (∼ 0.29) in 0.03(Y,La,Yb) doped samples due to their very low thermal conductivity, being higher than the best ZT reported values in the literature.
000130217 536__ $$9info:eu-repo/grantAgreement/ES/DGA/T54-20R
000130217 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000130217 590__ $$a5.8$$b2023
000130217 592__ $$a1.103$$b2023
000130217 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b109 / 439 = 0.248$$c2023$$dQ1$$eT1
000130217 593__ $$aMaterials Chemistry$$c2023$$dQ1
000130217 591__ $$aMETALLURGY & METALLURGICAL ENGINEERING$$b8 / 90 = 0.089$$c2023$$dQ1$$eT1
000130217 593__ $$aMetals and Alloys$$c2023$$dQ1
000130217 591__ $$aCHEMISTRY, PHYSICAL$$b51 / 178 = 0.287$$c2023$$dQ2$$eT1
000130217 593__ $$aMechanics of Materials$$c2023$$dQ1
000130217 593__ $$aMechanical Engineering$$c2023$$dQ1
000130217 594__ $$a11.1$$b2023
000130217 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000130217 700__ $$0(orcid)0000-0003-2212-447X$$aAmaveda, H.$$uUniversidad de Zaragoza
000130217 700__ $$aDura, O. J.
000130217 700__ $$aPelloquin, D.
000130217 700__ $$0(orcid)0000-0003-4747-7327$$aMora, M.$$uUniversidad de Zaragoza
000130217 700__ $$0(orcid)0000-0003-3995-5763$$aTorres, M. A.$$uUniversidad de Zaragoza
000130217 700__ $$aMarinel, S.
000130217 700__ $$0(orcid)0000-0001-7056-0546$$aSotelo, A.$$uUniversidad de Zaragoza
000130217 7102_ $$15002$$2305$$aUniversidad de Zaragoza$$bDpto. Ingeniería Diseño Fabri.$$cÁrea Expresión Gráfica en Ing.
000130217 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000130217 773__ $$g954 (2023), 170201 [9 pp.]$$pJ. alloys compd.$$tJOURNAL OF ALLOYS AND COMPOUNDS$$x0925-8388
000130217 8564_ $$s921923$$uhttps://zaguan.unizar.es/record/130217/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2024-04-18
000130217 8564_ $$s1373828$$uhttps://zaguan.unizar.es/record/130217/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2024-04-18
000130217 909CO $$ooai:zaguan.unizar.es:130217$$particulos$$pdriver
000130217 951__ $$a2024-11-22-12:06:58
000130217 980__ $$aARTICLE