Synthesis and ionic conductivity of compounds with partial substitution of cerium by rare-earth ions in barium cerate
We report on the effects of partial substitution of cerium ions by the rare-earth ions on phase formation of compounds, produced by sol-gel method in the system BaCO3 - CeO2 - Me2O3, where Me = Y, Pr, Sm, Gd. For the synthesis temperature 1223 K phase region of solid solutions composition BaCe1-xMexO3-s, isomorphic perovskite was detected, and the regularities of changes in the structural parameters when doped with ions of rare-earth metals obtained for the perovskite phase. In the range of 300-973 K the dependence of the ionic conductivity at ac-current of the synthesized phases against inverse temperature was investigated.