Effect of Annealing Temperature on the Structural, Magnetic, and Morphological Properties of Mg-Ni-Zn Ferrite Nanoparticles

The present study investigates the influence of annealing temperature on the structural, magnetic, and morphological properties of doped Mg-Ni-Zn ferrite nanoparticles synthesized via the sol-gel method. The nanoparticles were annealed at different temperatures ranging from 200°C to 600°C, and their phase composition, crystallinity, grain size, magnetic properties, and surface morphology were analysed using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectroscopy (EDS), and Vibrating Sample Magnetometry (VSM). The results indicate a significant enhancement in crystallinity and particle size with increasing temperature, while the magnetic properties exhibited a strong dependence on annealing conditions. The findings provide valuable insights into optimizing the annealing temperature for tailored ferrite properties in technological applications.