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Microcrystalline powders of the Sr2−xBixTi2−xFexO6±δ (x=0.25; 0.50; 0.60; 0.75; 1; 1.25) perovskites have been prepared by the liquid-mix technique and the SrBiTi2−xFexO6 (x=0.85) sample was obtained by the ceramic method. Rietveld refinements from X-ray powder diffraction data showed a structural transition as a function of x: cubic symmetry (S.G. Pm3m) is observed for x≤1 whereas the x=1.25 sample...
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