Zinc and cobalt nano ferrites and their potential applications in environmental sustainability

Abstract

Fundamental research and industrially applied research, currently depend on magnetic oxide nanoparticles and ferromagnetic oxides due to their extensive applications for electronic, magnetic, optical sensor and absorptive activities. ferromagnetic substances mainly contain different type of Ferrite. Ferrite material constitutes, Iron oxide (Fe2O3) and divalent metal oxides of Transition metals like cobalt, nickel etc. The key objective of this paper is to study the impending applications of nano - ferrites doped with bivalent transition metals with their properties. Low-Temperature Self-Propagating combustion method was used to synthesize the particles. Synthesized Zinc and Cobalt Nano ferrites from the chemical co-precipitation method were found to be of 20 to 90 nm in average size, and comparative study of their properties using the results of Fourier-transform spectroscopy (FTIR) and X-ray powder diffraction (XRD). The Field Emission Scanning Electron Microscope (FESEM) confirms the conception of ferrite nanoparticles with a structure type cubic spinel. Further comparative Sensing studies showed that the sample displays variation in resistance when gases are passed over the surface, and the change in resistance is observed.