Studying of dielectric spectra of YCu0.15Mn0.85O3 solid solution with the use of complex conductivity

This work presents the results of studying the electrophysical properties of the [Formula: see text][Formula: see text]O 3 solid solution in the range of temperatures of [Formula: see text] = 26–400[Formula: see text]C and frequency range of [Formula: see text] = 10 2 –10 5 Hz. A model description of the revealed dispersion of dielectric parameters in the material is made. The nonclassical modified Havriliak–Negami model written for complex electrical conductivity was used as an approximation model. It is shown that the application of this model almost exactly describes the frequency behavior of the dielectric constant [Formula: see text]/[Formula: see text]( [Formula: see text], the dielectric loss tangent tg[Formula: see text]( [Formula: see text] as well as the real and imaginary parts of complex conductivity [Formula: see text]( [Formula: see text] and [Formula: see text]( [Formula: see text]. The results of this work are an important step in identifying the opportunities and understanding the applications of this model.