Solid-phase synthesis of titanium substituted barium hexaferrite BaFe12–xTixO19

Abstract

This paper presents the results of obtaining a partially substituted binary hexaferrite of
BaFe_12–xTi_xO₁₉ by a solid-phase synthesis method.

The initial components of the charge – powders Fe₂O₃, BaCО₃ and TiO₂ were mixed with a ball mill. The ground powders were compressed into tablets. The pressing was carried out using a metal mold and a hydraulic press.

Sintering was carried out using a tube furnace with silicon carbide heaters.

The synthesis was carried out at a temperature of 1350 ° C for 3 hours. After that, repeated grinding, pressing and sintering of the samples were carried out at a temperature of 1350 °C for 3 hours.

The study of the synthesized samples was carried out by X-ray phase analysis using a Rigaku Ultima IV diffractometer. X-ray patterns were recorded in a range of angles 2θ from 5 to 90 degrees.

The chemical composition of the samples was studied using a scanning electron microscope JEOL JSM7001F equipped with an energy dispersive X-ray fluorescence analyzer INCA X-max 80
(Oxford Instruments).

As a result of the study, a technique was developed for the preparation of barium-substituted hexaferrite BaFe_12–xTi_xO₁₉ with titanium. Using the X-max 80 energy dispersive x-ray fluorescence analyzer, the chemical composition of the samples is determined. Using X-ray phase analysis (Rigaku Ultima IV), the samples obtained are monophasic.