Influence of Mg2+ and Ce3+ substituted on synthesis, structural, morphological, electrical, and magnetic properties of cobalt nano ferrites

Abstract

Mg2+ and Ce3+ doped Cobalt ferrites Co1-xMgxFe2-yCeyO4 (x = 0.0, 0.25, 0.5 and 0.75; y = 0.0, 0.03, 0.06, and 0.09) were synthesized chemically through the sol-gel auto combustion method. The structural analysis was done using X-ray diffraction (XRD) analysis, Field Emission Scanning Electron Microscopy (FESEM), and Fourier Transform Infrared Spectroscopy (FTIR) analysis. XRD study showed the ferrite’s formation of spinel cubic structure. The outcomes of FESEM images show that the particles are homogenous with minor agglomeration. The formation of peak ϑ 1 around 600 cm-1 and ϑ 2 around 400 cm-1 is shown by FTIR, confirming the formation of the spinel structure. High dopant concentrations result in increased DC electrical resistance. High-resistance materials with a decreased dielectric constant and loss are obtained by substituting Mg2+ and Ce3+ cations at the Co2+ and Fe3+ sites. These materials are suited for high-frequency devices. Additionally, it was observed that the AC conductivity was dispersed across the applied frequency ranges and exhibited a lower value than the parent material. The effect of the substituted on magnetic studies was examined systematically using a VSM at a temperature in the room. The magnetization measurements show that the synthesized contents increases, magnetization values decrease, and coercivity increases.