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This work focuses on the development of a method to make nano cobalt ferrite  powder using a solgel process. A particular emphasis is devoted to the  understanding of the role of the chemical parameters involved in the solgel  technique, and of the heat treatment on the structures and morphologies of the  materials obtained. Several samples of cobalt ferrite powder were obtained by  varying the initial parameters of the process in addition to the heat treatment  temperature. Xray diffraction and scanning electron microscopy were used to  identify the structure and morphology of samples demonstrating the influence of  the initial parameters. DTA/TGA was carried out on one sample to identify  important reaction temperatures during the heat treatment. The average particle  size, as estimated for one sample by the full width at half maximum (FWHM) of  the strongest Xray diffraction (XRD) peak, was found to be about 45 nm. It has  been found that the chelating agent and the crosslinker have a critical  influence on the resultant structure, the particle size and the particle size  distribution

Development of cobalt ferrite powder preparation employing the sol-gel technique and its structural characterisation