000161003 001__ 161003
000161003 005__ 20251219150013.0
000161003 0247_ $$2doi$$a10.1016/j.materresbull.2025.113529
000161003 0248_ $$2sideral$$a144173
000161003 037__ $$aART-2025-144173
000161003 041__ $$aeng
000161003 100__ $$aAmirkhizi, P.
000161003 245__ $$aEnhanced power factor in CaMnO3-based thermoelectric ceramics via co-doping
000161003 260__ $$c2025
000161003 5060_ $$aAccess copy available to the general public$$fUnrestricted
000161003 5203_ $$aNb-doped Ca0.97Y0.01La0.01Yb0.01Mn1-xNbxO3 materials were prepared to assess their thermoelectric properties. Samples were obtained by sintering at 1583 K for 12 h involving planetary milled precursors. XRD analysis indicated primarily thermoelectric phase with minor CaMn2O4. Microstructural observations revealed decreasing grain size with increasing Nb content. However, electrical resistivity decreases for the samples with Nb-content up to 0.03, which can be associated with the increase of the charge carrier concentration. The lowest value at 1073 K (9.2mΩcm) is among the best reported in the literature. Seebeck coefficient decreased with Nb-doping, and the best PF value at 1073 K has been determined for 0.01Nb samples (∼0.48mW/K2m). Assuming the thermal conductivity at 1073 K similar to that at 473 K, the calculated ZT values are among the typically reported in this family. These results highlight the promise of CaMnO3-based materials for integration in thermoelectric modules working under steady-state mode, where the high PF values are of great importance.
000161003 536__ $$9info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S
000161003 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000161003 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000161003 700__ $$0(orcid)0000-0003-3995-5763$$aTorres, M.A.$$uUniversidad de Zaragoza
000161003 700__ $$aDepriester, M.
000161003 700__ $$aHedayati, M.
000161003 700__ $$0(orcid)0000-0001-7056-0546$$aSotelo, A.$$uUniversidad de Zaragoza
000161003 700__ $$0(orcid)0000-0002-0794-3998$$aMadre, M.A.$$uUniversidad de Zaragoza
000161003 700__ $$aKovalevsky, A.V.
000161003 700__ $$aRasekh, Sh.
000161003 7102_ $$15002$$2305$$aUniversidad de Zaragoza$$bDpto. Ingeniería Diseño Fabri.$$cÁrea Expresión Gráfica en Ing.
000161003 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000161003 773__ $$g190 (2025), 113529 [9 pp.]$$pMater. res. bull.$$tMaterials Research Bulletin$$x0025-5408
000161003 8564_ $$s7644163$$uhttps://zaguan.unizar.es/record/161003/files/texto_completo.pdf$$yVersión publicada
000161003 8564_ $$s2581642$$uhttps://zaguan.unizar.es/record/161003/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000161003 909CO $$ooai:zaguan.unizar.es:161003$$particulos$$pdriver
000161003 951__ $$a2025-12-19-14:58:21
000161003 980__ $$aARTICLE