International Journal of Nano Science Trends and Technology

Authors: M. A. Gofur, M. A. Hossain, S. S. Sikder, D. K. Saha

Abstract: The present work is focused on the influence of substitutions and sintering additive are V2O5 on structural, transport and electromagnetic properties of Ni-Cu-Zn ferrites. A series of ferrite samples of the composition Ni0.28Cu0.10Zn0.62Fe2O4 + x wt.% the concentration sintering additives were varies 0.2wt.% to 0.8wt.% for V2O5 were prepared by using the solid state reaction technique sintered at 1150oC with 6 hours holding time. The X-ray diffraction analysis revealed that all the samples of the series crystalline in single phase cubic spinel structure. Lattice parameter of Ni0.28Cu0.10Zn0.62Fe2O4 + x wt. % V2O5 series are slightly decrease with increase x content. The average grain size of the samples increases with increase of doped V2O5 additive content. Curie temperature (Tc) and saturation magnetization (Ms) are slightly increases with increasing V2O5 doped ferrite samples up to x = 0.6 after decreasing. The magnetization process all the samples are soft magnetic behavior of magnetic materials. Initial permeability (µi) increases with increase doped V2O5 both sintering temperature attaining sample maximum value for x = 0.4 and with higher quality factor after decreasing. This enhancement of permeability may be correlated with improved microstructural features. The µi shows the flat profile from 1 kHz to 4MHz indicating frequency stability for all the ferrite samples. The improved electromagnetic properties of the composition might be attributed to better densification and visible grain size. DC resistivity decreases with increasing temperature. The dielectric constant is found to decrease continuously with increasing frequency and remain almost constant at higher frequency range. The dielectric behavior of the experiment ferrite samples explained on the basis of the mechanism of the dielectric polarization and conduction process.