Nix Zn1-x Fe2 O4 ( x = 0.25, 0.45 ) ferrite nanoparticles were prepared by a modified sol-gel method using high purity metal nitrates and aloe vera plant extracted solution. Using of aloe vera extract simplifies the process , provide an alternative process for a simple and economical synthesis of nanocrystalline ferrite . The structural characteristics of calcined sample of Nix Zn1-x Fe2 O4( x = 0.25, 0.45 ) ferrite nanoparticles were determined by X-ray diffraction ( XRD), Fourier transform infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM).The prepared samples have spinel structure . From XRD we observed that particle size decreases with increasing Ni content. Nano size of the particles was confirmed by TEM measurement. Magnitization measurements were obtained at room temperature by using Vibrating sample magnetometer (VSM) , which showed that the calcinated samples exhibited super paramagnetic behaviour.
