Synthesis Structural and Magnetic Studies of Cobalt Doped Nickel Zinc Ferrite Nanoparticles

Abstract

This thesis work preferentially concerned with the tunable structural and magnetic properties of undoped and Co doped Ni Zn ferrite nanoparticles synthesized by sol gel method and new optimized non-aqueous method. The changing properties of prepared nanoparticles have been explained in terms of distribution of cations, synthesis method and annealing temperature. newlineThe work has been systematically described in six different chapters as follows: newlineChapter I contains a brief introduction of nanotechnology, history of ferrites and magnetism, classifications of ferrites, magnetism in ferrites, synthesis method and spinel ferrites nanoparticles properties. newline Chapter II describes the synthesis of ferrite nanoparticles and experimental techniques used for the characterization of prepared nanoparticles for structural, morphology, stoichiometry and magnetic properties. newline Chapter III intended to synthesis, structural and magnetic studies of Co doped Ni Zn ferrite nanoparticles. All the nanoparticles have been prepared by sol-gel method and annealed at 700 degree celsius We have employed X ray diffraction XRD Field emission scanning electron microscopy FESEM Energy dispersive X ray spectroscopy EDX and Vibrating sample magnetometer VSM newlineChapter IV describes the effect of annealing temperature on structural and magnetic properties of Co doped Ni-Zn ferrite nanoparticles. The nanoparticles were also prepared by sol-gel method but annealing temperature is 1100 degree celsius. newlineChapter V defines the development of Co doped Ni-Zn ferrite nanoparticles by non- newline aqueous method and their structural and magnetic properties studies. In this chapter the nanoparticles have been prepared by optimized new method that is non-aqueous method and characterized for their structural and magnetic properties. newlineChapter VI shows the overall conclusion of work. newline newline