Effect of Drying Temperature on the Magnetic and Microstructural Properties of BaFe₁₂O₁₉ Synthesized by Coprecipitation Method

Abstract

Barium hexaferrite (BaFe12O19) has dominated many aspects of technology, serving as a permanent magnet, magnetoelectric, multiferroic, and electric motors, generators, microwave devices, and drug delivery systems. There is a challenge in the synthesis of BaFe12O19 with the coprecipitation method. As a result, research is conducted to examine the factors influencing the properties of BaFe12O19 during the preparation process, specifically on the drying temperature of the mixture. The precursors were precipitated, through some procedural steps, along with stirring at 450 rpm at a certain temperature for a while and simultaneously pouring the precipitant dropwise; the sample was dried at different temperatures. The final samples were annealed at the same rate of temperature within the same time interval. The results depicted that drying at different temperatures leads to the variation in the magnetic and microstructural properties of BaFe12O19, indicating that drying at high temperatures resulted in high coercivity with low saturated magnetization.

Improving barrier properties of polyethylene/Fe2O3‐modified nanographene nanocomposites in a magnetic field

“…The peaks at 33.5°, 35.99°, 41.2°, 49.8°, 54.4°, 57.7°, 62.8°, and 64.4° correspond to the following reflections: (104), (110), (113), (024), (116), (511), (440) and (214). As it is difficult to identify the same qualities for a material with multiple orientations, the α‐Fe 2 O 3 substitution on the surface of GnP is confirmed by the results 22,34 …”

“…24 The diffractogram obtained for the As it is difficult to identify the same qualities for a material with multiple orientations, the α-Fe 2 O 3 substitution on the surface of GnP is confirmed by the results. 22,34 3.3 | FESEM micrographs of HMWPE/GnP-mFe 2 O 3…”