MICROWAVE-SYNTHESIZED ZINC-SUBSTITUTED COBALT FERRITE NANO-PARTICLES STRUCTURAL CHARACTERIZATION

Abstract

A microwave combustion method was used to synthesize CoFe₂O₄ZnFe₂O₄ nanoparticles.Cobalt, zinc, and substituted magnetic nanoparticles of the typical size of 389A are present in single-phase spinal ferrites are synthesized using a microwave combustion approach modified by a process following treatment.The post-treatment increases crystalline rather than changing the crystal structure. Fourier Transform Infrared and powder x-ray diffraction (FTIR) research back this up. Citric acid is employed as a source of energy. In x-ray and FTIR, the freshly produced sample reveals an impurity phase.Adsorption of the unreacted citrate molecule onto the surface of the particle causes this. It has been demonstrated by using 0.1 M HCl to treat the sample, the impurity phase can be removed and a pure single phase obtained. After the impurity is removed, the increase in magnetization at 7.5 kOe is about 7%. To get rid of the surface-adsorbed OH ions, samples are treated with NaCl and heated at 200 °C for four hours. The XRD results show that the treatment has no effect on crystallite size or distribution, but it does remove the OH ion. The FTIR analysis also confirms this. As a result, this improved an approach can be utilized to make pure nanocrystalline spinal ferrites samples.