Synthesis and Physicochemical Properties of Nanomagnetic Zinc Ferrite System

摘要

Effects of various amounts of fuel on structural, morphological and magnetic properties of ZnFe2O4nano-particles have been studied. The specimens were characterized by IR, XRD, SEM, TEM andVSM. The XRD measurements confirm the formation of well-crystalline zinc ferrite as a single phase.Transmission electron microscopy analysis revealed the formation of Zn-ferrite particles with a narrowsize distribution in the range of 40- 58 nm. The change in the fuel to oxidant ratio results in an increaseof both the magnetization and coercivity of the as prepared nano-particles. This observation impliesthat, besides size, m causes also significant structural rearrangements which in turn induce changes in3+ 3+ the strength and the number of Fe (A)揙e (B) superexchange interactions.