The effect of Al-substitution on the physical, IR spectra and magnetic properties of Mn Ni Zn Al Fe O (x=0 to x=0.15, with step= 0.025) ferrites, prepared by conventional ceramic method, 0.5 0.1 0.4 x 2-x 4 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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Sattar et al. (2004) studied this question.
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