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The oxygen exchange and diffusion properties of La0.6Sr0.4CoO3−δ thin films on yttria stabilized zirconia were analyzed by impedance spectroscopy and 18O tracer experiments. The investigations were performed on the same thin film samples and at the same temperature (400°C) in order to get complementary information by the two methods. Electrochemical impedance spectroscopy can reveal resistive and...
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