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 BaCO<sub>3</sub> - CeO<sub>2</sub> - Me<sub>2</sub>O<sub>3</sub>, where Me = Y, Pr, Sm, Gd. For the synthesis temperature 1223 K phase region of solid solutions composition BaCe<sub>1-x</sub>Me<sub>x</sub>O<sub>3-s</sub>, 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.