Synthesis and thermodynamic functions of barium cerate co-doped with erbium and indium

The new compound BaCe_0.7Er_0.2In_0.1O_2.85 was synthesized as a representative of promising class of solid state ionic conductors. Thermodynamic functions needed to improve and extend devices portfolio with a special emphasis on the heat capacity and phase transition have been revealed. It has been experimentally established that there is no phase transition for BaCe_0.7Er_0.2In_0.1O_2.85 in the temperature range of 191–695K, which can give advantage to the practical application of this compound in comparison with materials possessing the phase transitions.