Abstract
Effects of various amounts of fuel on structural, morphological and magnetic properties of ZnFe2O4 nano-particles have been studied. The specimens were characterized by IR, XRD, SEM, TEM and VSM. 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 narrow size distribution in the range of 40- 58 nm. The change in the fuel to oxidant ratio results in an increase of both the magnetization and coercivity of the as prepared nano-particles. This observation implies that, besides size, m causes also significant structural rearrangements which in turn induce changes in the strength and the number of Fe3+(A)-O-Fe3+(B) superexchange interactions.