Initial Permeability Spectra of Mn0.20Zn0.50Cu0.30Fe2O4 Synthesized by Combustion Method

F. Alam and A. K. M. Akther Hossain

Frequency dependence initial permeability spectra of Mn0.20Zn0.50Cu0.30Fe2O4 synthesized by auto combustion method have been investigated. The X-ray diffraction patterns of this composition indicated that the sample possesses single phase cubic spinel structure. Sintering temperature (Ts) significantly affect on densification, grain growth and initial permeability of the samples. The grain size (D), bulk density ( B  ), initial permeability (μ/ i) increases with increase in sintering temperature. The average grain size varied from 53-97 μm.The initial permeability strongly depends on average grain size, density and intragranular porosity. The real part of initial permeability increases from 799 to ~1100. The ferrite sample with higher initial permeability has a relatively lower resonance frequency obeying the Snoek’s relation.