The evaluation of the dielectric responses of zinc ferrite/copper oxide nanocomposites by impedance spectroscopy analysis

Abstract

Improving the dielectric properties of zinc ferrite-based nanocomposites is of great interest for their potential use in advanced electronic and energy storage applications. In this study, zinc ferrite nanoparticles were synthesized by the hydrothermal method, and composites were prepared by incorporating 5%, 10%, and 15% CuO nano-particles. Structural analysis confirmed the cubic spinel structure of the ferrites and copper oxide incorporation into the matrix. The dielectric properties exhibited Maxwell-Wagner type interfacial polarization, consistent with Koop's theory. Copper oxide additives were found to significantly enhance the complex dielectric components of the zinc ferrite nanocomposites. The conduction mechanism was also analyzed through AC conductivity measurements. In light of these results, CuO incorporation improved the dielectric performance of zinc ferrite-based nanocomposites, highlighting their potential for use in energy storage devices and other room temperature electronic applications.