Microwave-induced combustion synthesis of Ni–Zn ferrite powder and its characterization

Abstract

Ni–Zn ferrite powders were successfully synthesized by microwave-induced combustion process. The process takes only a few minutes to obtain calcined Ni–Zn ferrite powders. The resultant powders were investigated by XRD, SEM, VSM, TG/DTA and surface area measurements. The as-received product shows the formation of cubic ferrite with saturation magnetization ( M s)≈23 emu/g, whereas upon annealing at 850°C for 4 h, the saturation magnetization ( M s) increased to ≈52 emu/g.