Micro-structures and magnetic properties of Mg-Al substituted in barium hexa-ferrite prepared by co-precipitation method

Penulis: Martha Rianna, Timbangen Sembiring, Marhaposan Situmorang
In 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

DOI: doi:10.1088/1757-899X/725/1/012049

No. Arsip : LIPI-20200127
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