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Mixed oxides in the system Sr-Ce-Co-O were prepared by solid state reaction and by freeze-drying of precursor compounds followed by thermal treatment. Two types of perovskite oxides exist in the system: Solid solutions of the type Sr 1-y Ce y CoO 3-x and mixed oxides of the type (1 - y)SrCeO 3 -ySrCoO 3- ...
The perovskite type oxides of the system Sr-Ce-Fe-O were prepared by mixing and thermal treatment in air. Microstructure and phase composition were determined by scanning electron microscopy and X-ray diffraction. Besides the pure SrCeO 3 and SrFeO 3-x a solid solution range of Sr 1-y Ce y FeO 3-x ...
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