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Phase equilibria and crystal structures of solid solutions in the Sr-Fe-Ni-O system at 1100°C in air

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Abstract

The phase equilibria in the Sr-Fe-Ni-O system at 1100°C in air have been studied by x-ray diffraction, and the corresponding phase diagram at constant temperature and pressure has been constructed. The system has been shown to contain two solid-solution series at 1100°C in air: SrFe1 − x Ni x O3 − δ (0 < x ≤ 0.075, sp. gr. Cmmm) and Sr3(Fe1 − y Ni y )2O7 − δ (0 < y ≤ 0.15, sp. gr. I4/mmm). Neither Sr4(Fe1 − z Ni z )6O13 nor Sr(Fe1 − z Ni z )12O19 solid solutions have been identified. The lattice constants and structural parameters of single-phase samples have been refined by the full profile Rietveld analysis method.

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Authors and Affiliations

  1. Ural State University, pr. Lenina 51, Yekaterinburg, 620083, Russia

    E. A. Kiselev & V. A. Cherepanov

  2. Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Yekaterinburg, 620041, Russia

    N. V. Proskurnina & V. I. Voronin

Authors
  1. E. A. Kiselev
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  2. N. V. Proskurnina
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  3. V. I. Voronin
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  4. V. A. Cherepanov
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Correspondence to E. A. Kiselev.

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Original Russian Text © E. A. Kiselev, N. V. Proskurnina, V. I. Voronin, V. A. Cherepanov, 2009, published in Neorganicheskie Materialy, 2009, Vol. 45, No. 3, pp. 313–319.

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Kiselev, E.A., Proskurnina, N.V., Voronin, V.I. et al. Phase equilibria and crystal structures of solid solutions in the Sr-Fe-Ni-O system at 1100°C in air. Inorg Mater 45, 271–277 (2009). https://doi.org/10.1134/S0020168509030108

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  • DOI: https://doi.org/10.1134/S0020168509030108

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