由于激光晶体的生长周期长、成本高等缺点，激励人们不断地探索新的激光材料。透明陶瓷就是最近发展起来的一种。采用溶胶-凝胶法合成了用于制备掺钕的钆镓石榴石(Nd3+:Gd3Ga5O12)透明激光陶瓷的多晶纳米粉体。采用X射线衍射(XRD)和扫描电子显微镜(SEM)对样品的晶相和形状进行了分析。结果表明，温度为1000 ℃，灼烧12 h，获得单分散、形状规则、似球形的Gd3Ga5O12(GGG)纳米粉体，且随着烧结温度的提高前驱粉体粒度不断增加。荧光发射的最强峰位于1062.7 nm处，对应于Nd3+的4F3/2→4I11/2能级跃迁。

New laser materials have been explored continuously due to the long growth time and high cost of the crystals. Transparent ceramic is one of the latest developed laser materials. In this paper, polycrystalline Nd3+:Gd3Ga5O12 (Nd3+:GGG) nanopowders for transparent laser ceramic were synthesized by sol-gel method. The sample crystalline phase and shapes were analyzed with X-ray diffraction (XRD) and scanning electron microscope (SEM). The results indicated that Gd3Ga5O12 (GGG) nanometer powders with sphere shape and homogeneous dispersion were obtained when the samples were fired at 1000 ℃ for 12 h. The size of precursor particles increased with increasing of the sintering temperature. The strongest fluorescence emission peak appeared at 1062.7 nm which corresponds to Nd3+(4F3/2→4I11/2) transition.