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Structural investigation of the phase transition in perovskite titanate containing additives

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Abstract

The phase transformation from tetragonal to cubic for perovskite BaTiO3 containing Dy2O3 and Ho2O3 has been studied by X-ray diffraction and infrared absorption spectra. The high-angle reflections (4.11) and (422) from the cubic phase give a set of doublets of the two wavelengthsK α1 andK α2. In the tetragonal structure each doublet is split into a set of partly overlapping doublets. The high broadening of absorption bands in the infrared spectra of heavily doped samples is attributed to symmetry changes from tetragonal to cubic.

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Hanafi, Z.M., Ismail, F.M., Hammad, F.F. et al. Structural investigation of the phase transition in perovskite titanate containing additives. J Mater Sci 27, 3988–3992 (1992). https://doi.org/10.1007/BF01105094

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Keywords

  • Polymer
  • Reflection
  • Phase Transition
  • Titanate
  • Absorption Spectrum