Structural and Magnetic Properties of AL3+ Doped NI-ZN Nano Ferrites

Abstract: Nickel-Zinc Aluminium doped nano ferrites having the composition of Ni0.5Zn0.5Al0.5Fe1.5O4 have been synthesized by auto combustion method and were characterized by XRD technique, SEM images, FTIR curves and VSM technique. The developed powders were sintered at various temperatures at 3500C, 4500C and 5500C for 5hours and the effect of sintering temperature on structural properties was carried out. The sintering process increased the crystallinity of the sintered material. The powder XRD pattern confirms the single-phase spinel structure for the synthesized sample powders. SEM study shows the uniform particle distribution. The FTIR spectrum shows strong absorption peaks which are typical for cubic spinel crystal structure. The VSM studies reveal that all samples are showed the hysteresis structure.

Keywords: Ni-Zn-Al Nano ferrites, auto combustion technique, XRD, SEM, FTIR, magnetic properties.