Síntese de nanopartículas de ferrita de cobalto pelo do método sol-gel protéico utilizando gelatina como precursor orgânico e caracterização magnética e estrutural

Abstract

This work will be presented the sol-gel method for protein synthesis of cobalt ferrite nanoparticles and its characterization by X-ray diffraction and magnetization measurements. For the synthesis of nanoparticles was used gelatin as organic precursor. The resin obtained in the process was divided into small quantities and calcined at different temperatures during 4h and ramp 10 ° C / min. The X-rays diffraction patterns were subjected to the phase identification and from use of Rietveld method were obtained lattices parameters, and the average particle size. The magnetization measurements of samples were obtained for all when subjected to an external magnetic field. The remnant magnetization and coercivity were obtained from these measures. Also, transmission electron microscopy for the sample calcined at 400 ° C was obtained.