Preparation and Characterization of the Magnetic Properties of Barium Hexaferrite via the Solid-State Reaction Method
Nazaruddin Nasution(a),Syahrul Humaidi(a*), Erna Frida(a),Marzuki Naibaho(bc), 3Masno Ginting(b)

a)Department of Physics, Universitas Sumatera Utara, Medan, 20155, Indonesia
*syahrul1[at]usu.ac.id
b)Department of Physics, Faculty of Mathematics and Natural Science, Universitas Indonesia, Depok 16424, Indonesia
c)Center for Advanced Materials Research (PRMM) - National Research and Innovation Agency (BRIN), Complex Puspiptek Building 440-441, Tangerang-South, Banten,15314 Indonesia.

Abstract

Barium Hexaferrite is a magnetic material with significant potential for various industrial applications, including data storage devices, loudspeakers, and electromagnetic wave absorbers. This study aims to synthesize and characterize the magnetic properties of Barium Hexaferrite produced via the solid-state reaction method using mortar and High Energy Milling (HEM) techniques. Characterization was carried out using X-RayDiffraction (XRD), Scanning Electron Microscope (SEM), and Vibrating Sample Magnetometer (VSM). XRD results indicate that the hexagonal crystal structure of Barium Hexaferrite remains intact with stable lattice parameters. SEM analysis reveals a uniform particle morphology with sizes ranging from 2 to 4 micro meter. VSM testing shows that the sample prepared using the mortar technique (BHX-M) exhibits a saturation magnetization (Ms) of 51.03 emu/g, while the HEM technique (BHX-HEM) yields a value of 50.40 emu/g. The coercivity (Hc) of BHX-M is higher (0.32 T) than that of BHX-HEM (0.30 T), indicating that the synthesis technique influences the magnetic properties. This study confirms that the solid-state reaction method can produce Barium Hexaferrite with magnetic properties suitable for commercial applications and advanced technology.

Keywords: Barium hexaferrite, solid-state reaction, structure, morphology, magnetic properties

Topic: Material Physics