无机材料学报2011，Vol.26Issue(8)：792-796,5.DOI:10.3724/SP.J.1077.2011.00792
熔盐合成BaFe12O19六角铁氧体及磁性能研究
Molten Salt Synthesis and Magnetic Properties of BaFe12O19 Hexaferrite
摘要
Abstract
Barium ferrite BaFe12O19 (BaM) powders were prepared by using molten salt method. The preparation conditions of samples were investigated in detail, such as annealing temperature, soaking time, molten salt additive amount and Fe3+/Ba2+ molar ratios. The phase composition, microstructure and magnetic properties of the resultant powders were measured respectively by X-Ray Diffractometer (XRD), Scanning Electron Microscope (SEM) and Vibrating. Sample Magnetometer (VSM). Formation of BaM started below 750℃ in 0.5NaCl+0.5KCl. Single phase BaM powders were obtained while the Fe3+/Ba2+ molar ratios was controlled in the range from 10 to 11.5. The SEM results showed that the grains were regular hexagonal platelets when molten salt additive amount R was controlled in the range from 1 to 3. The resultant powders achieved under condition of Fe3+/Ba2+ molar ratios of 11.5 and calcination temperature of 1000℃ showed the saturation magnetization up to 71.9A·m2/kg, which was quite close to the theoretical value of 72A·m2/kg.关键词
熔盐合成/BaFe12O19/六角铁氧体/磁性能Key words
molten salt synthesis/BaFe12O19/hexaferrite/magnetic property分类
物理学引用本文复制引用
栗海峰,龚荣洲,卢秀芳,余伟,王鲜,范力仁,何岗..熔盐合成BaFe12O19六角铁氧体及磁性能研究[J].无机材料学报,2011,26(8):792-796,5.基金项目
国家自然科学基金(50972135) （50972135）
湖北省耐火材料与高温陶瓷重点实验室-省部共建国家重点实验室培育基地开放基金(G201003) （G201003）
