Synthesis, Structure and Transport Properties of Novel Chlorine-Doped Perovskite Based on Ba2CaNbO5.5
Keyword(s):
The chlorine-doped complex oxide Ba2CaNbO5.475Cl0.05based on barium calcium niobate was synthesized using the solid state method. It was found that the introduction of chloride ions leads to the increase of the cell volume. Structure and electrical properties have been investigated. Electrical conductivities were measured by varying the temperature in dry (pH2O=3.5·10-5atm) and wet (pH2O=2·10-2atm) air. The composition Ba2CaNbO5.475Cl0.05is capable to dissociative dissolution of water vapor and can exhibit proton transport. Chlorine doping increases the conductivity of matrix compound Ba2CaNbO5.5, the difference between un-and chlorine-doped samples is up to one order of magnitude at low temperatures.