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

The electrical properties of dispersions of a powdered ferroelectric nanocomposite based on ilmenite (FeTiO$_3$) and hollandite (K$_{1.46}$Ti$_{7.2}$Fe$_{0.8}$O$_{16}$) in dioctyl phthalate have been studied by impedance spectroscopy techniques in a frequency range of 10$^{-1}$–10$^6$ 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.