Micro-structures and magnetic properties of Mg-Al substituted in barium hexa-ferrite prepared by co-precipitation method
Penulis: Martha Rianna, Timbangen Sembiring, Marhaposan SitumorangIn this study, Mg-Al substituted barium hexa-ferrite of BaFe 12- 2x Mg x Al x O 19 (x=0-0.2) materials using co-precipitation method at a calcination temperature of 1200 o C for 2 hours were carried out. The precursor concentrations of the mixture were varied to identify the optimum sample. The final powder was characterized by using XRD, FE-SEM, and VSM. The XRD shows that the Mg-Al substitution was not change the micro-structures of barium hexa-ferrite. FE-SEM observation was carried out on the surface of hexagonal shape of barium hexa-ferrite. The magnetic properties shows that the decreases saturation (Ms), remanence (Mr) and coercivity (Hc). The optimum condition was obtained on x=0.2 with Ms= 29.28 emu/g, Mr= 15.33 emu/g, Hc= 1259 Oe.
IOP Conf. Series: Materials Science and Engineering, tahun 2020, volume : 725, pp. 012049
No. Arsip : LIPI-20200127