Electrodynamic Characteristics of Solid Solutions Pb(Fe1 – xScx)2/3W1/3O3 in a Broad Spectral Range

Resumo

The methods of broadband dielectric spectroscopy are used to study the effect of substitution of Fe³⁺ by Sc³⁺ in Pb(Fe_1 – xSc_x)_2/3W_1/3O₃ solid solutions of perovskite family on the dielectric response function in the frequency range from 120 Hz up to 100 THz (4 × 10^–9–3 × 10³ cm^–1). The experimental data are analyzed in the framework of multiparameter dispersion models. The evolution of the dispersion parameters of absorption bands depending on the degree of cation substitution in the B position of perovskite basis of ABO₃ is discussed.