Abstract
In this research, BaFe12O19/GO (GO:10, 20, 40, and 50 wt%) nanocomposites were synthesized by sol–gel auto combustion method and their structural, optical, magnetic and dielectric properties were investigated. The x-ray diffraction results for all nanocomposites validate the formation of a hexagonal phase of Ba hexaferrite. The crystallite size decreased with incorporation of graphene oxide (GO) in the hexaferrite phase and making the nanocomposites. In the FESEM analysis, a change in the surface morphology was observed with an increase in the percentage of GO for samples BFO-40GO and BFO-50GO. The band gap energy of the nanocomposites decreased with increasing the amount of the graphene oxide. Measurements of the magnetic hysteresis loop for all nanocomposites were conducted using a vibrating sample magnetometer at room temperature. By increasing the percentage of GO, a decrease in the saturation magnetization was observed for the samples. A decrease in dielectric constant and loss function were also detected at low frequencies when the GO continent goes up. The nanocomposite sample of BFO-40GO exhibited the highest observed value for real part of the Modulus.
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