• Dr Bantesh K Bammannavar

The two ferrite systems Ni0.2 Co0.8 Fe2O4 and Ni0.5 Zn0.5 Fe2O4 were prepared by conventional ceramic method. The formations of cubic spinal structure of the ferrites were confirmed from XRD measurements. The surface morphology and average grain size was studied with the SEM measurements. A DC conductivity measurement reveals semiconducting nature of ferrites. The variation of dielectric constant and loss tangent with frequency at room temperature was studied. The dielectric dispersion is observed at lower frequency region and it remains constant at higher frequency region. The monotonic increase in AC conductivity with frequency shows small polaron type conduction. The magnetic hysteresis of ferrites was studied. At room temperature ferrites exhibit magnetic behaviour indicating the presence of ordered magnetic system

XRD; SEM; Conductivity; Magnetic hysteresis

"Preparation, Electric and Magnetic Properties of Ni-Co/Ni-Zn Ferrites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.497-498, June-2019, Available :http://www.jetir.org/papers/JETIR1908E70.pdf

"Preparation, Electric and Magnetic Properties of Ni-Co/Ni-Zn Ferrites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp497-498, June-2019, Available at : http://www.jetir.org/papers/JETIR1908E70.pdf