Interaction of Europium Oxide with Iron Oxide at 1300°C

Keywords

phase equilibria, iron oxide, europium oxide, perovskite-type, solid solutions, lattice parameters

Abstract

The phase relations in the Eu₂O₃–Fe₂O₃ system at 1300 °C were studied in the whole concentration range by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The samples were prepared with a concentration step of 1–5 mol %. The isothermal cross-sections of the Eu₂O₃–Fe₂O₃ phase diagram at 1300 °C are characterized by the presence of four single-phase (B–Eu₂O₃, EuFeO₃(R), Eu₃Fe₅O₁₂, Fe₂O₃), three two-phase (B–Eu₂O₃+EuFeO₃, EuFeO₃+ Eu₃Fe₅O₁₂, Eu₃Fe₅O₁₂+Fe₂O₃) regions.

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