Abstract
The temperature dependences of the dielectric constant ε' and the third harmonic coefficient γ3ω for composite ceramics (СuO)1-x/(BaTiO3)x in the temperature range 100–300 K were studied. It is shown that the ε´(T) dependence for СuO has insignificant anomalies at transition temperature ТN2 = 230 K. The maximum values of the third harmonics fit in the middle of the temperature interval [ТN1; TN2]. With an increase in the content of barium titanate, an increase in the dielectric constant and a shift of the polar region toward low temperatures are observed.