Effect of Mn²⁺ Substitution on Structural and Magnetic Properties of Co-Zn Ferrite

Abstract

Co0.8-x Mnx Zn0.2 Fe2O4 (x = 0.0, 0.1, 0.2, and 0.3) was prepared using the coprecipitation method. We investigated the effect of the Mn+2 substitution on the structural and magnetic properties. X-ray analysis revealed formation of single phase spinel cubic ferrite nanoparticles unaccompanied by secondary phases while the Morphology studies done using scanning electron microscopy show spherical shaped nanoparticles which are agglomerated. The energy-dispersive X-ray analysis confirmed the expected stoichiometry. The measurements of the magnetic parameters, using VSM, were performed at room temperature. M-H loops have shown that the prepared samples exhibit soft ferrimagnetism. The saturation magnetization was found to decrease by increasing the Mn content. The magnetic moments that were estimated from measured magnetic parameters and from the cation distribution over A and B sites on the basis of Neel’s two sublattice model of ferrimagnetism, were noted in all the samples. Based on which we obtained an improvement in the magnetic properties of the prepared samples, that made them suitable for use in high-frequency applications ascribed to the Mn ions’ substitution.

Structural and Electrical Properties of Li Substituted Mg Nano Ferrites: Prepared by Citrate-gel Auto Combustion Method

“…In the view nanomaterials properties like magnetic, electrical, optical, catalytical completely different with bulk materials. 12,13 Crystalline size, lattice constant, surface area, composition of materials also impacts the properties.…”