Analyzing the variations in electrical, structural and magnetic properties of zinc-doped MnFe2O4 ferrite obtained via co-precipitation

Abstract

Zinc-incorporated manganese ferrite in polyvinylpyrrolidone matrices was successfully synthesized via a co-precipitation method at 1000 °C. Zn²⁺ doping was found to have a notable effect on the structural properties of the sample, as evidenced by XRD results indicating a cubic FCC structure with a ferrite spinel structure. The average crystallite size was 20.61 nm, and the lattice parameters of the samples varied slightly depending on the amount of Zn²⁺ doping. It was observed that Zn²⁺ doping increases both the magnetic moment and temperature of the sample. Zn²⁺ ions possess a large magnetic moment, which interacts with the other ions in the sample, resulting in an increased overall magnetic moment and coercivity. FE-SEM microstructure revealed cauliflower morphology, multiple pores, and rough aggregates. This increased magnetic moment was reflected in a specific capacitance value of 53.518Fg⁻¹ at a scanning rate of 30mVs⁻¹. Impedance analysis reveals that the relaxation phenomenon is highly dependent on concentration and frequency. PVP-coated Zinc-incorporated manganese ferrites are of great importance in technology and science due to their high saturation magnetization and low core losses. These ferrites have been widely utilized in electronic applications, such as magnetic storage devices, sensors, and microwave devices.