Obtention of CoFe₂O₄ thin film by sol-gel method

Full text: This work is based on fabrication and characterization magnetic and structurally of CoFe₂O₄ (CFO) thin films obtained by sol-gel method. Thin films of different thicknesses were obtained on a silicon substrate (Si (100)) using the technique of spin coating. The crystallinity of all the samples obtained was confirmed by X-ray diffraction (XRD). All phases obtained correspond to CoFe₂O₄. The lattice parameters were determined by Rietveld method, and are in agreement with those reported in the literature. The scanning electron microscopy (SEM) showed thin films with good homogeneity and it was possible to determine its thickness. The magnetic properties were measured using vibrating sample magnetometry (VSM). The field applied during measurement was oriented parallel to the film plane and there was a high coercivity, as well as a characteristic behavior of a material hard magnetically [1-3]. (author)