Preparation, Characterization and Magnetic Properties of Cd Substituted Li–Ni Nano Ferrites

Abstract

The Nano sized Cd–Ni–Zn ferrites with general chemical formula Cd0.5 Ni_0.75−x/2 Zn_x/2 Fe₂O₄ (0<x<1) were synthesized from a simple polymer matrix-based precursor solution method. The solution was composed of metal nitrates, polymer (PVA) and disaccharide (sucrose). Thermolysis/flame pyrolysis of the precursor mass in an external temperature resulted in the oxide phase formation. X-ray diffraction studies (XRD) confirm the formation of single-phase ferrites. The micro structural studies were carried out by scanning electron microscopy (SEM). The average grain diameter was estimated by the Scherrer method and grain diameter is found to vary from 25 nm to 45 nm. The saturation magnetization was studied as a function of composition.