Authors : Nada S. Ahmade and Falah M. Abdel Hasan
Abstract: In this research, we have used a microwave assisted combustion method to synthesize cobalt-zinc ferrite nanoparticles with four nanocrystalline ferrites including : Co1Fe2O4, Co0.9Zn0.1Fe2O4, Co1.1Zn0.1Fe2O4 and Co 0.3Zn 0.7Fe2O4 using glycine as a fuel. Then syntheses graphene by the same method, graphene single layer graphite, known as graphene is an important material because of its unique two-dimensional structure, high conductivity, excellent electron mobility and high surface area. The obtained ferrites were characterized studied by X-Ray powder Diffraction (XRD), results for Co-Zn ferrite after and before coating via. graphene showed that the material had cubic spinal structure. Field Emission Scanning Electron Microscopy (FESEM) micrographs for the powder before coating showed that all of the nanoparticles have nano-crystalline behavior (16-36 nm) and particles indication cubic shape and after coating via grapheme was (46-12 nm). Vabrating VSM analysis demonstrated that the type of fuel used for synthesis is highly effective a parameter on magnetic properties of nanoparticles. The B-H loops of all samples that are obtained by using vibrating sample magnetometer are displayed. The effect of Co addition on saturation magnetization and the coercivity of all the samples are discussed. The samples synthesized with glycine fuel showed better magnetic properties for application as soft magnetic devices.
Nada S. Ahmade and Falah M. Abdel Hasan, 2018. Microwave Assisted Combustion Synthesis of Co-Zn Nanoparticles Ferrite Encapsulation by Graphene. Journal of Engineering and Applied Sciences, 13: 8653-8661.