玻璃陶瓷法制备的BaFe_(12-2x)(CoSn)_xO_(19)微粉的磁性

用玻璃陶瓷法制备了ＢａＦｅ１２－ ２ｘ （ＣｏＳｎ）ｘＯ１９（ｘ＝ ０，０．４０，０．６０，０．８０，１．０）微粉，研究了微粉粒子的晶化过程，微粉的磁性对粒子形态、结构及ＣｏＳｎ 替代量ｘ 的依赖关系，测量并讨论了粒子表面自旋倾斜对比饱和磁化强度的影响。

高密度磁记录用Co-Sn替代钡铁氧体微粉的结构与磁性

对玻璃陶瓷法制备的 Ｂａ Ｆｅ１２２ｘ （ Ｃｏ Ｓｎ）ｘ Ｏ１９的 Ｃｏ Ｓｎ 替代钡铁氧体微粉的磁性作了介绍，研究了微粉粒子的晶化过程； 微粉的磁性对粒子形态、结构及 Ｃｏ Ｓｎ 替代量 ｘ 的依赖关系； 微粉矫顽力与温度的依赖性； 测量并讨论了粒子表面自旋对饱和磁化强度的影响．

Influence of ZrO_2 on sintering and crystallization of CaO-Al_2O_3-SiO_2 glass-ceramics

ZrO2 was added into CaO-Al2O3-SiO2 glass-ceramics and the effect of ZrO2 on sintering and crystallization of CaO-Al2O3-SiO2 glass ceramics was investigated. The results show that the sintering shrinkage ratio of glass particles decreases with the increase of the content of ZrO2. ZrO2 has an unfavourable effect on sintering shrinkage ratio of glass particles. The sintering shrinkage ratio of glass particles increases with the increase of sintering temperature. The increase of sintering temperature favors the decrease of the liquid phase viscosity of glass particles. ZrO2 has little effect on crystallization of main crystalline phase （β-wollastonite）. However, it promotes the crystallization at relatively low temperature.