Structural, magnetic and electromagnetic properties of plate-like Zn2W barium hexagonal ferrites prepared by coprecipitation/molten salt method

Abstract

Plate-like Zn2W barium hexagonal ferrites were prepared using a combined coprecipitation and molten salt method. The thermal decomposition behavior of precipitates was systematically studied by TG–DSC and XRD. Pure plate-like Zn2W barium hexagonal ferrites with optimal properties were obtained at a synthesis temperature of 1150°C for 1h. Phase composition, morphology and magnetic properties of the Zn2W ferrite powders synthesized at different temperatures (1100–1250°C) and different holding times (0.5–3h) were investigated by XRD, SEM and VSM. The electromagnetic parameters were studied by VNA. Saturation magnetization of Zn2W ferrite synthesized at 1150°C for 1h reached the maximum of 76.24emu/g, whereas coercivity decreased with the increase in synthesis temperature and holding time.