Ceria-gadolinia solid solutions were prepared by the cation complexation technique using citric acid as complexant agent. The purposes of this work were to evaluate de calcining profile of the precursor resin in order to obtain nanosized powders with high sinterability; and to verify the effects of dopant content on densification and electrical resistivity of sintered specimens. The main results show that powders with less than 10 nm crystallite size may be obtained at relatively low temperatures. Gadolinium oxide enhances the densification of pressed specimens reaching a relative density > 99% for the Ce0.8Gd0.2O1.9 composition sintered at 1500 ºC for 3 h.
solid electrolytes; ceria-gadolinia; electroceramics
