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Structural Stability of SrCo1 − x FexO3 − δ Solid Solutions

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Inorganic Materials Aims and scope

Abstract

SrCo1 − x FexO3 − δ solid solutions with 0.3 ≤ x ≤ 0.9 are shown to have the cubic perovskite structure. The unit-cell parameter and volume of the solid solutions are nonmonotonic functions of Fe content, with a minimum at x = 0.4. Dilatometric data are used to determine the thermal expansion coefficients of the solid solutions. At low oxygen partial pressures (\(p_{\operatorname{O} _2 }\) ≤ 40 Pa), the high-temperature, disordered perovskite phase exists between 850 and 1000°C, which is the optimal temperature range for the effective use of SrCo1 − x FxO3 − δ ceramics as oxygen membranes in oxygen partial pressure gradients of 104–105/10–100 Pa.

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Authors and Affiliations

  1. Institute of General and Inorganic Chemistry, Belarussian Academy of Sciences, ul. Surganova 9, Minsk, 220072, Belarus

    L. V. Kokhanovskii, Yu. G. Zonov, O. P. Ol’shevskaya & V. V. Pan’kov

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  1. L. V. Kokhanovskii
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  2. Yu. G. Zonov
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  3. O. P. Ol’shevskaya
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  4. V. V. Pan’kov
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__________

Translated from Neorganicheskie Materialy, Vol. 41, No. 8, 2005, pp. 998–1004.

Original Russian Text Copyright © 2005 by Kokhanovskii, Zonov, Ol’shevskaya, Pan’kov.

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Kokhanovskii, L.V., Zonov, Y.G., Ol’shevskaya, O.P. et al. Structural Stability of SrCo1 − x FexO3 − δ Solid Solutions. Inorg Mater 41, 876–881 (2005). https://doi.org/10.1007/s10789-005-0229-3

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  • DOI: https://doi.org/10.1007/s10789-005-0229-3

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