Resumo

PARADA, Yury et al. Evolution of the structural ordering of the Sr ₂ SbMnO ₆ perovskite as a function of temperature. Rev. acad. colomb. cienc. exact. fis. nat. [online]. 2018, vol.42, n.163, pp.162-165. ISSN 0370-3908.  https://doi.org/10.18257/raccefyn.560.

The polycrystalline ceramic of Sr2SbMnO6 was synthesized by the conventional solid-state reaction. The used synthesis route differed from others reported in the literature, as we used SrO instead of SrCO3 as the Sr precursor. Studies of the X-ray diffraction (XRD) pattern obtained by means of the Rietveld refinement using the code of the Generalized Structure Analysis System (GSAS) software were performed. The analyses revealed that the crystal structure was tetragonal in space group P4/mnc at temperatures from 100 to 600º C, and changed to a cubic structure with space group Fm-3m at temperatures between 800 and 1,000º C. The temperature dependence of the lattice parameter was also discussed. The study of this material is important given its multiferroic properties.

Palavras-chave : X-Ray diffraction; Structural and phase changes.

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