Overall conductance (in moist and dry air at partial water vapor pressures of 2.34 and 40 Pa, below 970 ° C) and transport numbers for ions and protons in ceramics Ç ‡ Ce 0.85 R 0.15 O 3 -δ doped by cations with constant ( R = Sm) and variable (R = Pr, Tb) oxidation degrees and in BaCeO 3 are measured. Partial conductances (by ions, protons, oxygen ions, holes) are determined in moist air at partial oxygen pressures of 10 5 -10 -13 Pa at 900 ° C. Various models for the hydrogen incorporation in the oxides under study are discussed.
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