Effect of reduced particle size on structural and physical properties of CoFe₂O₄ nanoparticles

The structure and magnetic properties of CoFe₂O₄ were investigated. Cobalt ferrite has been synthesized by the citrate – nitrate combustion method. X-ray diffraction analysis (XRD) illustrated a single-phase cubic structure for all the prepared samples. The particle size was found that it strongly depends on the heat treatment. High-resolution transmission electron microscopy (HRTEM) confirmed the formation of nanoparticles with spherical shapes. Fourier Transform Infrared Spectroscopy (FTIR) observed the two characteristic bands of ferrites. The M–H curve provided information regarding the magnetic parameters such as saturation magnetization (Ms) and coercivity (Hc).
Keywords: Co ferrite XRD VSM TEM IR.