Study on the properties of the copper substituted NiZn ferrites

Development of various NiZnCu ferrite compositions extends their applications by identifying the magnetic properties such as the high initial permeability at high frequencies. Copper substitutes in NiZnCu ferrite has larger ionic radius than does Ni2+ and different preferences for the two sublattices in the spinel structure, and their incorporation in the matrix of the NiZn ferrites can change many properties due to cation distribution and modification. The addition of copper in this composition has been known to play a crucial role in reducing the firing temperature. In this paper, a review on the effect of copper substitution in NiZn ferrite on microstructure and composition related magnetic and electric properties have been presented.