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The oxygen exchange and transport properties of the perovskite-type oxides Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3−x (BSCF5582) and Ca 0.5 Sr 0.5 Mn 0.8 Fe 0.2 O 3−x (CSMF5582) are investigated by oxygen permeation as well as electrical conductivity relaxation experiments. The temperature dependence of the oxygen permeation flux...
The oxygen nonstoichiometry δ of La 1−x Sr x Co 1−y Fe y O 3−δ (x=0.6 and y=0.2, 0.4) was investigated by thermogravimetry in the range 703≤T/°C≤903 and 1E−5<pO 2 /atm<1. The oxygen deficit increases with increasing T and decreasing pO 2 . Electronic conductivities σ were measured as a function of pO 2 in the range 1E−5<pO ...
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