Journal of Materials Science

, Volume 30, Issue 19, pp 4896–4900 | Cite as

Investigations related to the incorporation of Ca2+ ions into the BaTiO3 lattice

  • D. Völtzke
  • H -P. Abicht


Dependence of the composition of (100−x) BaTiO3 +xCaTiSiO5 precursor (x = 2–16 mol%) mixtures on calcination temperature was investigated by means of X-ray diffraction and differential scanning calorimetry. The formation of a secondary phase, fresnoite (Ba2TiSi2O8), starts at about 900 °C. The resulting Ba and O vacancies and the produced microstress stabilize the pseudocubic phase of BaTiO3 at room temperature. Temperatures higher than 1200 °C are necessary to incorporate Ca ions into the BaTiO3 crystals forming (Ba, Ca) TiO3 solid solutions. As a result the lattice becomes free of tension and the BaTiO3 based ceramics transform into thermodynamically stable tetragonal phases at room temperature.


Polymer Solid Solution Differential Scanning Calorimetry Calcination Calorimetry 
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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • D. Völtzke
    • 1
  • H -P. Abicht
    • 1
  1. 1.Fachbereich Chemie der Martin-Luther-UniversitätHalle/SaaleGermany

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