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

Abstract

A series of Co 0.8−x Mn x Zn 0.2 Fe 2 O 4 (x = 0.0 to 0.3 instep of 0.1) was prepared using the coprecipitation method. We investigated the structural and magnetic properties ascribed to the Mn +2 substitution. A single-phase spinel cubic ferrite nanoparticle with no extra peaks, supporting pure phase formation which confirmed by the X-ray analysis while the morphology studies has been examined using SEM, whose results showed an agglomeration to spherical shaped nanoparticles. The expected stoichiometry was confirmed by EDX analysis. By using VSM, the magnetic parameters measurements were performed at room temperature. The prepared samples exhibit soft ferrimagnetism from M–H loops. By increasing the Mn content, the saturation magnetization was found to decrease. Based on Neel’s two sublattice model of ferrimagnetism, and according to the cation distribution over A and B sites, the magnetic moments were estimated in all the samples from measured magnetic parameters. Based on the magnetic properties study which we obtained that revealed an enhancement in the magnetic properties of the prepared samples, that made them appropriate for practical applications in recording media and magnetic data storage ascribed to the Mn ions substitution.