MUCCILLO, REGINALDOFLORIO, DANIEL Z. deMUCCILLO, ELIANA N.S.2018-12-272018-12-272018MUCCILLO, REGINALDO; FLORIO, DANIEL Z. de; MUCCILLO, ELIANA N.S. Equimolar yttria-stabilized zirconia and samaria-doped ceria solid solutions. <b>Ceramics</b>, v. 1, n. 2, p. 343-352, 2018. DOI: <a href="https://dx.doi.org/10.3390/ceramics1020027">10.3390/ceramics1020027</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/29401.2571-6131http://repositorio.ipen.br/handle/123456789/29401Compositions of (ZrO2)0.92(Y2O3)0.08 (zirconia: 8 mol % yttria—8YSZ) and (CeO2)0.8(Sm2O3)0.2 (ceria: 20 mol % samaria—SDC20) ceramic powders were prepared by attrition milling to form an equimolar powder mixture, followed by uniaxial and isostatic pressing. The pellets were quenched to room temperature from 1200 °C, 1300 °C, 1400 °C and 1500 °C to freeze the defects configuration attained at those temperatures. X-ray diffraction analyses, performed in all quenched pellets, show the evolution of the two (8YSZ and SDC20) cubic fluorite structural phases to a single phase at 1500 °C, identified by Rietveld analysis as a tetragonal phase. Impedance spectroscopy analyses were carried out in pellets either quenched or slowly cooled from 1500 °C. Heating the quenched pellets to 1000 °C decreases the electrical resistivity while it increases in the slowly cooled pellets; the decrease is ascribed to annealing of defects created by lattice micro-tensions during quenching while the increase to partial destabilization of the tetragonal phase.343-352openAccesssolid electrolytessamariumimpedancespectroscopyzirconiumceriumyttrium oxideszirconium oxidescerium oxidessamarium oxidesdoped materialssolid solutionsArtigo de periódico2110.3390/ceramics1020027aguardandohttps://orcid.org/0000-0001-9219-388Xhttps://orcid.org/0000-0002-8598-279XSem PercentilSem Percentil CiteScore