skip to main content

The Effect of BaCO3 Compound Changes on the Formation of Magnetic Material BaFe12O19

*Priyono Priyono  -  Physics Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
Agung Cahyono  -  Physics Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
Indras Marhaendrajaya  -  Physics Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
Agus Subagio  -  Physics Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
Vincensius Gunawan  -  Physics Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia

Citation Format:
Abstract

BaFe12O19 is a permanent magnetic material which has superior properties to be excellent until the late of twentieth century. Some of the obstacles in the synthesis of the material using a stoichiometric composition is a difficulty to obtain a single phase and the second phase is always found. This research attempted to make modifications on the initial non-stoichiometric composition by varying the fraction of Ba/Fe through BaCO3 and Fe2O3 compound through solid state reaction mechanism. This solid state reaction was initiated by mixing various fractions of BaCO3 and Fe2O3 powder composition and compacted to produce a homogeneous mixture using a planetary milling. After drying and molding, it was obtained a homogeneous mixture like a cylinder with a diameter of 2:54 cm and a thickness of 0.5 cm. The BaFe12O19 phase was obtained by heating the sample at a temperature of 1200 ° C for 4 hours. To determine changes in the fraction of Ba/Fe before and after sintering, the samples were tested by X-Ray Fluorescence (XRF), while the structure and crystallinity were tested by X-ray diffraction (XRD) and Scanning Electron Microscope (SEM). The results showed that during the heating process, the reduction of barium fractions exceeded 5% from of their initial weight, while changes in the fraction of Fe was not significant. The results of structure and crystallinity measurement showed that the addition a substantial amount of barium carbonate can lead to the decrease of crystallinity from 35.271 nm to 11.265 nm.

Fulltext View|Download

Last update:

No citation recorded.

Last update: 2024-05-20 18:27:32

  1. Analysis of physical properties, crystal structure and magnetic properties of barium hexaferrite doped with 2 wt % of sro and prepared by coprecipitation method

    Suprapedi . Materials Science Forum, 127 , 2019. doi: 10.4028/www.scientific.net/MSF.966.325