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Conductivity of perovskites La0.9Sr0.1Sc1–x Fe x O3–α (x = 0.003–0.47) in oxidizing and reducing atmospheres

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Abstract

The conductivity of single-phase ceramic materials based on proton-conducting perovskite La0.9Sr0.1ScO3–α containing from 0.3 to 47 at % Fe in the scandium sublattice has been studied. Synthesis has been performed by burning with ethylene glycol. Measurements have been carried out by the four-probe (500–900°C) and impedance (100–500°C) methods in oxidizing and reducing atmospheres, as well as at different pressures \({p_{{O_2}}}\) (2.1 × 104–10‒15 Pa) and \({p_{{H_2}O}}\) (0.04–2.5 kPa). Substitution of scandium with iron significantly decreases the proton conductivity.

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Authors and Affiliations

  1. Institute of High-Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, ul. Akademicheskaya 20, Yekaterinburg, 620137, Russia

    A. Yu. Stroeva, V. P. Gorelov & A. V. Kuz’min

  2. Ural Federal University named after the first President of Russia B.N. Yeltsin, ul. Mira 19, Yekaterinburg, 620002, Russia

    A. V. Kuz’min

Authors
  1. A. Yu. Stroeva
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  2. V. P. Gorelov
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  3. A. V. Kuz’min
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Correspondence to A. Yu. Stroeva.

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Original Russian Text © A.Yu. Stroeva, V.P. Gorelov, A.V. Kuz’min, 2016, published in Fizika Tverdogo Tela, 2016, Vol. 58, No. 8, pp. 1473–1478.

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Stroeva, A.Y., Gorelov, V.P. & Kuz’min, A.V. Conductivity of perovskites La0.9Sr0.1Sc1–x Fe x O3–α (x = 0.003–0.47) in oxidizing and reducing atmospheres. Phys. Solid State 58, 1521–1527 (2016). https://doi.org/10.1134/S1063783416080278

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  • DOI: https://doi.org/10.1134/S1063783416080278

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