Abstract
The goal of this study is to evaluate the influence of the doping by magnesia on the synthesis of zinc/iron nanocomposite. The structural, morphology and magnetic properties of the resulting materials were investigated. The products obtained were characterized by IR, XRD, SEM and VEM techniques. The as synthesized samples show the formation of sponge-like agglomerates. The XRD measurements indicated that pure and doped samples consisted entirely of well crystalline spinel zinc ferrite as a single phase. Magnesia doping led to an increase in both the degree of crystallinity and lattice constant with subsequent a decrease in the density of the investigated solids. The average crystallite size and saturation magnetization were 53 nm and 59 emu/g, respectively, for the sample containing 4mol% MgO. Magnesia doped zinc ferrite showed better magnetic properties for application as soft magnetic devices.