The ac. conductivity σ and dielectric properties [dielectric constant έ, dielectric loss ε˝ and loss tangent (tan δ)] were measured as a function of frequency from 102 to 106 Hz for the mixed ferrites Mg1- x Zn x Fe2 O4 (where × = 0 to 0.6). It was observed that the ac conductivity σ is independent of frequency for f < 104 Hz, but for f > 104 Hz the conductivity σ increases strongly with frequency. It was found that the maximum values of σ lies in the range of frequency corresponding to the peaks of tan δ. The relaxation time (τ) was calculated for the samples of x = 0, 0.2, 0.3 and 0.4 and it was found to be about 2 x 10-6 sec. The electrical conduction mechanism was explained in terms of the electron hopping model. The frequency exponential factor (s) was estimated and it was found to vary between 0.49 and 0.77.
(2005). Frequency and Composition Dependence on the Dielectric Properties for Mg-Zn Ferrite. Egyptian Journal of Solids, 28(2), 263-273. doi: 10.21608/ejs.2005.149327
MLA
. "Frequency and Composition Dependence on the Dielectric Properties for Mg-Zn Ferrite". Egyptian Journal of Solids, 28, 2, 2005, 263-273. doi: 10.21608/ejs.2005.149327
HARVARD
(2005). 'Frequency and Composition Dependence on the Dielectric Properties for Mg-Zn Ferrite', Egyptian Journal of Solids, 28(2), pp. 263-273. doi: 10.21608/ejs.2005.149327
VANCOUVER
Frequency and Composition Dependence on the Dielectric Properties for Mg-Zn Ferrite. Egyptian Journal of Solids, 2005; 28(2): 263-273. doi: 10.21608/ejs.2005.149327
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