Abstract:
The application of the Green's temperature function method using the probabilistic Boltzmann factor to describe the temperature dependence of the dielectric constant of a ferroelectric is presented. Using the example of a ferroelectric solid solution of lead zirconate titanate, the Green's temperature function of the temperature dependence of the dielectric constant is calculated taking into account the presence of activation processes caused by the interaction of domain and defect structures of the ferroelectric. Using the method of activation-relaxation of dielectric constant, the activation energies of these processes were determined: disruption of domain walls from structural defects (oxygen vacancies); migration of defects (oxygen vacancies) and decay of the domain structure; dielectric response of a domainless paraelectric.
Keywords:dielectric constant, Green's function, activation energy, lead zirconate titanate.
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