Effect of Microwave Calcinations on Barium Hexaferrite Synthesized via Sol-Gel Combustion

Abstract

In the present work we have shown a novel Barium hexaferrite (BaFe12O19 - BaF) powder synthesized by a sol-gel combustion route using metal nitrates and D-Fructose. BaFe12O19 precursor was calcined using microwave furnace at 900°C for 10 minutes. The products were characterized by X-ray diffraction (XRD), high resolution scanning electron microscope (HR-SEM), and vibrating sample magnetometer (VSM), whose results indicate that they have well crystalline phase of barium hexaferrite, the diameter of the hexagonal platelet-like structure ranges from 50 to 100 nm. Magnetic measurements showed that the coercivity was 5558.6 Oe and saturation magnetization was 55.20 emu/g. Magnetic measurements for the barium hexaferrite showed enhanced coercivity.Keywords: Sol-gel combustion; Hexaferrite; D-Fructose; Remanent magnetization; Precursor.© 2011 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. doi:10.3329/jsr.v3i3.6483               J. Sci. Res. 3 (3), 451-456 (2011)