Preparation and Characterization of SrFe12O19/ Ba2Co2Fe12O22 Composite Hexaferrite

Abstract

In the present work, composites of SrFe12O19 (SrM)/Ba2Co2Fe12O22 (Co2Y) in different weight ratio (98/2, 96/4, 94/6, 92/8) were prepared. Their structural, morphological and magnetic properties were investigated using various techniques; viz. X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FE-SEM), Raman Spectroscopy and Vibrating Sample Magnetometer (VSM). X-ray diffraction pattern confirmed the co-existence of both phases in composites which is also supported by Raman analysis. The magnetic measurements show non-linear rise in saturation magnetization with the Co2Y content, while the coercivity drastically decreases. Smooth demagnetization curve of sintered composites confirmed the well-exchange coupling between M-Y phases within the studied composition range.