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Improvement of the Magnetic Properties of Mn-Ni-Zn Ferrite by the Non-magnetic Al3+-Ion Substitution

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Author(s): A.A. Sattar | H.M. El-Sayed | K.M. El-Shokrofy | M.M. El-Tabey

Journal: Journal of Applied Sciences
ISSN 1812-5654

Volume: 5;
Issue: 1;
Start page: 162;
Date: 2005;
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Keywords: Ferrites | IR-spectra | mangnetic properties | Mn-Ni-Zn ferrites | Al3+-substituted ferrites

ABSTRACT
The effect of Al-substitution on the physical, IR spectra and magnetic properties of Mn0.5Ni0.1Zn0.4AlxFe2-xO4 (x=0 to x=0.15, with step= 0.025) ferrites, prepared by conventional ceramic method, has been studied. The analysis of IR spectrum indicated the distribution of Al-ions between both A and B-sites. On Al substitution, the values of saturation magnetization, initial permeability and Curie temperature were increased. The dc resistivity is also increased with increasing Al-content. Such results are promising ones for the high frequency applications.
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