Effect of Cr dopant on the structural, magnetic and dielectric properties of Cu-Zn nanoferrites

Chromium substituted copper zinc ferrite of spinel crystal structure was synthesized in the form of nanoparticles using citrate nitrate combustion method. Phase composition, structure, magnetic and dielectric parameters were depicted by XRD, FTIR, HRTEM, VSM and dielectric measurements. Demeanor of magnetization has been elucidated on the basis of Neel's model of magnetic interactions and Yafet-Kittel angle existence. Dispersion of dielectric parameters proclaims the normal behavior of ferrites. Cole-Cole plot manifests the role of both grain boundary and bulk grain in conduction mechanism. The substitution of Cr3+ ions plays a decisive role in amending structural, magnetic and dielectric features of copper zinc nanoferrites. The optimum properties of the nanoferrite Cu0.8Zn0.2Cr0.02Fe1.98O4 make it primness for applications; especially data storage and magneto-electronic devices.