Negative Electrical Capacitance of the Organic Anticorrosion Films

Experimental data on the dielectric spectra of the organic films were studied and analyzed. An equivalent circuit consisting of two series-parallel RC- circuits is used for computer modeling and interpretation of experimental data of films with negative electrical capacitance in the high-frequency range. The critical frequency of changing the sign of the electrical capacitance has been determined. The negative electrical capacitance of the films under study is due to two factors: high-frequency processes of strong relaxation polarization with inverse electric field strength and low-frequency processes of hopping-type conductivity.