中文摘要：

选择BaO-Fe2O3-SiO2玻璃体系，通过采用分步晶化热处理方法制备出了以BaFe12O19为磁性主晶相的无变形硬盘用微晶玻璃，并利用XRD、SEM、VSM等测试手段对微晶玻璃进行了分析和性能检测．研究结果表明：采用分步晶化热处理方法制备的微晶玻璃性能优于传统的1步晶化热处理方法，并且样品在分步晶化热处理过程中不会产生变形．经过700℃／5h＋850℃／10h分布晶化热处理方法所制备出的微晶玻璃的主晶相为BaSiO3，BaFe12O19晶粒尺寸在1μm以内，其比饱和磁化强度可达248．89Am^2／kg，矫顽力可达142．44kA／m．

英文摘要：

Ba-ferrite （BaFe12O19）containing glass-ceramics SiO2 through a novel 2 step crystallization in order to have been prepared from the glass in BaO-Fe2O3 manufacture the magnetic memory disk without deformation. By means of DTA,XRD,SEM,VSM,the properties of Ba-ferrite containing glass-ceramics in BaO-Fe2O3-SiO2 is analyzed. The research results show： The glass pre-crystallized prior to secondary crystallization showed no deformation during heat-treatment and also exhibited better magnetic properties compared with the conventional 1 step crystallized glass. After crystallization at 700 ℃ for 5 h and sequent 850 ℃ for 10 h,the predominant crystalline phases formed were BaSiO3 and BaFe12O19. The glass-ceramics prepared under this heat-treatment schedule showed a saturation magnetization of 248. 89 Am^2/kg and a coercivity of 142.44 kA/m.