aFacultad de Ciencias Físico-Matemáticas, UAP, Apdo. Postal 1364, Puebla 72000, México
bInstituto de Física, Universidad Autónoma de Puebla, Apdo. Postal J-48, Puebla 72570, México
Abstract:
The observation of the domain dynamics of the ferroelectric–ferroelastic domains near the paraelectric–ferroelectric phase transition is reported. The study was performed by means of high-temperature polarized light microscopy. Close to the phase transition an increase in the number of domain walls was observed. After several heating–cooling cycles around the transition temperature, a memory domain microstructure at high temperature was observed. The possible physical mechanisms responsible for the high-temperature domain dynamics are discussed. Using a complex systems approach the complexity of the domain behavior is characterized.