Study of Impedance Properties of Non-Stoichiometric Ni-Zn Ferrite Annealed at Different Temperatures

The work reports annealing temperature effect on Ni0.3Zn0.7Fe2.1O4-δ ferrite synthesized using auto-combustion method. Impedance spectroscopy is an important tool to study microstructural effect on ferrite electrical properties and gives information about the resistive (real part) and reactive (imaginary part) components of the material. The overall resistance of the material is given by the combination of the grain interior and grain boundary resistances which can be separated by using impedance spectroscopy