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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