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以Al(NO3)3.9H2O、Y(NO3)3.6H2O和Nd(NO3)3.6H2O为原材料,丙烯酰胺和N′N-亚甲基双丙烯酰胺为单体和网络剂,采用高分子网络凝胶法制备了Nd∶YAG纳米粉体。分别用热重-差热分析、X射线衍射、扫描电子显微镜、透射电子显微镜和荧光分光光度计对所得样品进行表征。结果表明,钇铝石榴石晶相的形成温度为880℃,粉体呈珊瑚虫状,粒径随着温度的升高而增大。Nd∶YAG纳米粉在401nm处有强烈的发光峰,可以作为紫光光源的考虑对象;另外在研究中还发现了Nd3+在YAG中的浓度猝灭现象。
Using Al (NO3) 3.9H2O, Y (NO3) 3.6H2O and Nd (NO3) 3.6H2O as raw materials, acrylamide and N’N-methylenebisacrylamide as monomer and network agent, Nd: YAG nanopowders were prepared by the method. The samples were characterized by TG-DTA, X-ray diffraction, scanning electron microscopy, transmission electron microscopy and fluorescence spectrophotometry. The results show that the formation temperature of the crystalline phase of yttrium aluminum garnet is 880 ℃, and the powder is coral-like. The particle size increases with the increase of temperature. Nd:YAG nanopowder has a strong luminescence peak at 401nm, which can be considered as a violet light source. In addition, the concentration quenching of Nd3 + in YAG was also found.