The W-type barium cobalt hexaferrite powder with chemical composition BaCo2Fe16O27 was prepared using a simple heat treatment method. The precursor was calcinated at 650 °C for 3 h in a muffle furnace and then slowly cooled to room temperature in order to obtain barium cobalt hexaferrite powder. The flexible epoxy thin film of Ba-cobalt hexaferrite/epoxy composite was fabricated using the suitable amount of hardener and curing agent. Surface and morphological studies were carried out using X-ray diffractograms (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron micrography (SEM). The XRD pattern of hexaferrite reveals the formation of mixed phases– M and W. The FTIR spectra of hexaferrite powder samples were recorded at room temperature by using KBr pallet method. The field-dependent magnetic properties of the hexaferrite sample were investigated at room temperature using a vibrating sample magnetometer (VSM) with a maximum applied field of 15 kOe. The dielectric measurements were taken at room temperature within the frequency range to 100 MHz to 2 MHz.Keywords: Ba-cobalt hexaferrite, heat treatment, curing agent, epoxy film,hexaferrite-epoxy resin composite film.
