Monday 20 June 2016

EFFECT OF EUROPIUM CONCENTRATION ON THE PHYSICAL PROPERTIES OF NI-ZN FERRITE SUBSTITUTED BY MN2+ ION. -.

The effect of the substitution by europium ions on the magnetic and electrical properties was studied for the ferrite samples Mn0.5 Ni0.1Zn0.4EuxFe2-xO4, (0 ? x ? 0.15). The samples were prepared using conventional ceramic method. Cubic spinel structure of the prepared samples was examined using XRD. The porosity, crystallite size and the lattice parameter of the prepared were also calculated. The obtained results show an improvement in the porosity of the prepared samples due to Eu3+ substitution. The temperature dependence of the initial magnetic permeability was also studied. The experimental results indicate that the substitution by Eu3+ improves the magnetic properties by increasing the Curie temperature of the substituted samples. Temperature and composition dependence of the dc resistivity were also studied. The obtained results show the sample of x= 0.025 has high physical properties such as high resistivity, high magnetic permeability, highest Curie temperature and low porosity so it is useful in the technological applications. - See more at: .

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