Аннотации:
The aim of this work is to study phase transformations kinetics in ferroelectrics based on calcium titanate.
The relevance of this study is in the assessment of new methods for obtaining complex phase composition
ferroelectrics, which have the potential for application in microelectronics, photocatalysis, and power
engineering. The methods of scanning electron microscopy and X-ray diffraction were used as the main methods
of analysis. Analysis of morphological features made it possible to establish the kinetics of changes not only in
grain sizes, but also in their geometry. During the studies of phase transformations, the following dependence of
the TiO2 – anatase/CaTi2O4 → TiO2– anatase /CaTi2O4/CaTiO3 → CaTiO3/TiO2 – rutile type was established
depending on the annealing temperature. At the same time, at a temperature of 1000°C, a stable structure of
ceramic with a perovskite-like structure of the CaTiO3 type and a high structural ordering degree (more than
92%) is formed.
