Study of the microstructure and of the permeability spectra of Ni–Zn–Cu ferrites

Microstructure and magnetic properties of Ni–Zn ferrite are highly sensitive to the preparation methodology, sintering conditions and to the amount of constituent metal oxides, impurities or doping levels. This paper focuses its discussion on dependence of permeability spectra on the frequency for samples of Ni–Zn–Cu ferrite sintered at different temperatures. The experimental and calculated complex permeability curves are compared.