عنوان مقاله [English]
The aim of this work is characterization study of the Co3O4 fibers, prepared by the electrospinning technique. The study of the structural, morphology, optical, and magnetic properties were examined by XRD, SEM, DRS, and VSM at two different calcination temperatures. XRD indicates the cubic phase of the calcined Co3O4 fibers. The microstructural parameters such as crystallite size and its distribution are determined from the X-ray diffraction pattern analysis using whole powder pattern modelling (WPPM) approach. The results obtained from the X-ray diffraction pattern analysis and crystallite size distribution shows an increase in the crystallite size with calcination temperature. The SEM images show formation of randomly oriented fibers with diameters in in the range of 200 - 250 nm after calcinations. The DRS results show a decrease in the band gap energy with increasing of calcination temperature. The magnetic analysis performed by VSM, confirms a paramagnetic phase of fibers at elevated calcination temperature.