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Phase composition and conductivity of La1 − x Sr x ScO3 − α (x = 0.01−0.20) under oxidative conditions

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Abstract

The phase composition was studied and overall conductivity of oxides La1 − x Sr x ScO3 − α (x = 0.01−0.20) was measured as dependent on air humidity (pH2O = 0.04−2.35 kPa) in the temperature range from 100 to 900°C. The samples were synthesized in air at 1600°C. They are single-phase, with a perovskitetype structure with orthorhombic distortions and the density of 94–99%. The conductivity measurements were carried out using the impedance technique and four-probe dc technique. The contributions of bulk and grain boundary resistances were determined, effective conductivity activation energies were calculated.

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Authors and Affiliations

  1. Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 22, Ekaterinburg, 620990, Russia

    A. Yu. Stroeva, V. P. Gorelov, A. V. Kuz’min, E. P. Antonova & S. V. Plaksin

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  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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  4. E. P. Antonova
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  5. S. V. Plaksin
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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, E.P. Antonova, S.V. Plaksin, 2012, published in Elektrokhimiya, 2012, Vol. 48, No. 5, pp. 559–568.

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Stroeva, A.Y., Gorelov, V.P., Kuz’min, A.V. et al. Phase composition and conductivity of La1 − x Sr x ScO3 − α (x = 0.01−0.20) under oxidative conditions. Russ J Electrochem 48, 509–517 (2012). https://doi.org/10.1134/S1023193512050114

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  • DOI: https://doi.org/10.1134/S1023193512050114

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