000084334 001__ 84334
000084334 005__ 20240104111812.0
000084334 0247_ $$2doi$$a10.1007/s10853-018-3058-x
000084334 0248_ $$2sideral$$a109103
000084334 037__ $$aART-2019-109103
000084334 041__ $$aeng
000084334 100__ $$aFerreira, N.M.
000084334 245__ $$aImprovement of thermoelectric properties of Ca0.9Gd0.1MnO3 by powder engineering through K2CO3 additions
000084334 260__ $$c2019
000084334 5060_ $$aAccess copy available to the general public$$fUnrestricted
000084334 5203_ $$aOxide materials based on calcium manganite show clear prospects as thermoelectrics, provided by their stability at high temperatures and inherent flexibility in tuning the relevant electrical and thermal transport properties. Donor-doped CaMnO3 is an n-type semiconductor with a perovskite structure and relatively high thermoelectric performance. In this work, the precursor powders have been modified through potassium carbonate additions to produce Ca0.9Gd0.1MnO3 pellets without the usual delamination problems occurring during the compaction process. In order to demonstrate the relevant effects, several samples with different amounts of potassium carbonate (0–15 wt%) have been prepared. The results showed that potassium additions significantly facilitate the compaction procedure, while also improving the thermoelectric performances. The results also highlight the importance of porosity control for improving ZT, by decreasing the thermal conductivity without reduction of the electrical performance. The highest ZT values were observed for the samples processed at 15 wt% of potassium carbonate addition, exhibiting an improvement at least 30% at 800 °C when compared to the pure samples.
000084334 536__ $$9info:eu-repo/grantAgreement/ES/DGA/T54-17R$$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2017-82183-C3-1-R
000084334 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000084334 590__ $$a3.553$$b2019
000084334 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b108 / 314 = 0.344$$c2019$$dQ2$$eT2
000084334 592__ $$a0.798$$b2019
000084334 593__ $$aMaterials Science (miscellaneous)$$c2019$$dQ1
000084334 593__ $$aMechanics of Materials$$c2019$$dQ1
000084334 593__ $$aMechanical Engineering$$c2019$$dQ1
000084334 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000084334 700__ $$aFerro, M.C.
000084334 700__ $$aSarabando, A.R.
000084334 700__ $$aRibeiro, A.
000084334 700__ $$aDavarpanah, A.
000084334 700__ $$aAmaral, V.
000084334 700__ $$0(orcid)0000-0002-0794-3998$$aMadre, M.A.$$uUniversidad de Zaragoza
000084334 700__ $$aKovalevsky, A.V.
000084334 700__ $$0(orcid)0000-0003-3995-5763$$aTorres, M.A.$$uUniversidad de Zaragoza
000084334 700__ $$aCosta, F.M.
000084334 700__ $$0(orcid)0000-0001-7056-0546$$aSotelo, A.$$uUniversidad de Zaragoza
000084334 7102_ $$15002$$2305$$aUniversidad de Zaragoza$$bDpto. Ingeniería Diseño Fabri.$$cÁrea Expresión Gráfica en Ing.
000084334 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000084334 773__ $$g54, 4 (2019), 3252-3261$$pJ. Mater. Sci.$$tJOURNAL OF MATERIALS SCIENCE$$x0022-2461
000084334 8564_ $$s1008871$$uhttps://zaguan.unizar.es/record/84334/files/texto_completo.pdf$$yPostprint
000084334 8564_ $$s59966$$uhttps://zaguan.unizar.es/record/84334/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000084334 909CO $$ooai:zaguan.unizar.es:84334$$particulos$$pdriver
000084334 951__ $$a2024-01-04-11:02:59
000084334 980__ $$aARTICLE