Document Type : Reasearch Paper
Department of Chemistry, Azad University, North Tehran Branch, Tehran, Iran.
The composite powders of barium-magnesium ferrite were prepared using sol-gel auto-combustion and microwave methods. The crystal structure and the shape of nanocomposites have been compared. X-ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Vibrating Sample Magnetometer (VSM) were used to investigate the structural, morphological and magnetic properties of nanopowder. The formation of pure crystallized nanocomposites occurred when the precursor was heat-treated at 800°C for 2 hours. As a result, the composite powders consist of BaFe12O19 and MgFe2O4 phases. The average crystallite size of the synthesized nanoparticles which were obtained by sol-gel auto-combustion and microwave methods were 32 and 65 nm, respectively.