中文摘要：

以烷氧基金属化合物为原料，乙酸为催化剂，采用金属醇盐法制备了YAG前驱体粉体，在不同温度下焙烧，得到了YAG纳米粉体，并改变乙酸与水的用量以及醇盐溶液浓度，初步探讨了催化剂及醇盐溶液浓度对合成纯相YAG粉体的影响。主要采用X射线衍射（XRD）对这些粉体进行了物相分析，并利用透射电子显微镜（TEM）对粉体进行了形貌观察。结果表明，当钇、铝2种醇盐溶液浓度比为1：2、乙酸与水的摩尔比为10：1时，在1100℃焙烧得到了纯相YAG纳米粉体。粉体分散性较好，颗粒粒径在50～80nm，大致呈球状。

英文摘要：

YAG precursor was synthesized by metal-alkoxide method using yttrium-alkoxide and aluminum-alkoxide as raw materials and acetic acid as the catalyst. After calcining precursors at various temperatures, nano-sized YAG powders were obtained. The calcined powders were investigated by means of XRD and TEM. The results show that, when the concentration ratio of Y solution to Al solution and catalyst to water are 1：2 and 10：1 respectively, pure-phase YAG powder is formed when calcined at 1100 ℃ for 2 h, and the sphere-like powder whose diameters range from 50 nm to 80 nm is well dispersed