Effect of Co and Ni additions as doping materials on the micro-structures and the magnetic properties of barium hexa-ferrites

Abstract

In this paper, the synthesis of BaFe12-2xCoxNixO19 (x = 0–0.2) materials at a calcination temperature of 950 °C using a co-precipitation method have been reported. The precursor concentrations of the mixture were varied to identify the optimum sample. The results suggested that the structure of barium hexa-ferrite crystal did not change due to the effect of Co and Ni additions. The optimum condition is obtained at the concentration of 0.2% mol of Co and Ni ions resulting a single phase of barium hexa-ferrite. The XRD analysis confirmed that the addition of Co and Ni affects the growth of barium hexa-ferrite crystals in plane (114). The optimum condition of the magnetic properties are listed in the following: Ms = 34.83 emu/g, Mr = 18.03 emu/g, Hc = 2099 Oe. Keywords: Barium hexa-ferrites, Co-precipitation, Micro-structures, Magnetic properties