Magnetic Properties Analysis of Rare-Earth Substituted Nickel Zinc Ferrites

The raw compounds with the chemical composition
${\rm Ni}_{0.42}{\rm Zn}_{0.58}{\rm Me}_{{{x}}}{\rm Fe}_{{2\hbox{-}{x}}}{\rm O}_{4}$
where
${\rm Me}={\rm Eu}$
, Gd, La
$(x=0, 0.01, 0.02, 0.04, 0.06)$
were synthesized by means of the ceramic technique. The magnetic properties and magneto-chemical composition and structure of various doped nickel zinc ferrites were estimated by X-ray spectroscopy, EDAX analysis, and study of the behavior of susceptibility with changing temperature, complex permeability spectra, and magnetic hysteresis loop measurement.