Abstract
The effect of fluorine doping on the transport properties of perovskite-related complex oxides based on oxygen-ion conductor Ba4In2Zr2O11 is analyzed. The effect of fluorine doping and air humidity on the cell volume is established. The introduction of fluorine into the oxygen sublattice leads to the decreasing in the cell volume. The hydration of samples leads to the lattice expansion for both undoped and doped samples in comparison with unhydrated samples. The amount of water uptake decreases with the increase in the fluorine concentration. It was shown that fluorine doping allows to increase the proton conductivity in the region of low fluorine concentrations. The determining factor is not the change in the concentration of the current carrier, but the increase in its mobility.
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