Studying dispersions of ferroelectric nanopowders in dioctyl phthalate as dielectric media for capacitive electronic components

Resumo

The electrical properties of dispersions of a powdered ferroelectric nanocomposite based on ilmenite (FeTiO₃) and hollandite (K_1.46Ti_7.2Fe_0.8O₁₆) in dioctyl phthalate have been studied by impedance spectroscopy techniques in a frequency range of 10^–1–10⁶ Hz. The influence of stabilizing additives of cationic and anionic surfactants and iron acetylacetonate on the permittivity, conductivity, and dielectric losses was determined for dispersions containing 40 mass % of the solid composite. The influence of composition on the mechanisms of relaxation processes in the system is discussed.