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| Structural, Magnetic and Transport Properties of Fe-deficient of Ni-Cu-Zn Ferrites |
S. K. Bahadur, M. A. Hossain, S. S. Sikder, M. S. Akhter
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Abstract:
The present work is focused on the influence on electromagnetic and transport properties of Fe-deficient Ni-Cu-Zn ferrites. These are ferrite samples of composition (Ni0.28Cu0.10Zn0.62O)(Fe2O)1-x where x = 0.00, 0.02, 0.04, 0.06 and 0.08 were prepared using the solid state reaction technique. The phase identification was carried out by X-ray diffraction. The X-ray diffraction analysis revealed that the samples crystallize in single phase cubic spinel structure. A slight increase of Curie temperature (Tc), saturation magnetization (Ms) and initial permeability (?/) with increase of Fe-deficient. The permeability spectrum with frequency follows the Snoek’s limit. Sample with x = 0.00 sintered at 11000C possess the maximum value of relative quality factor (RQF). From the B-H loops, the romance (Br) and coercive force (Hc) were determined. Saturation induction (Bs) and are measured from low field B-H loops is found to increase with increasing Fe-deficient up to x = 0.04 thereafter decrease. DC resistivity increase with increasing Fe-deficient up to x = 0.06 and thereafter decrease. The dielectric constant is found to decrease continuously with increasing frequency and remains almost constant at higher frequency range. From hysteresis parameter it was revealed that optimum soft magnetic properties corresponds to the composition with x = 0.06 sintered at 11000C having highest permeability, maximum induction, minimum coercivity and hysteresis losses.
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