溶胶-凝胶低温燃烧法制备Yb,Ho∶Gd_3Ga_5O_(12)纳米粉体  

Preparation of Yb,Ho∶Gd_3Ga_5O_(12) Nano-powders by Sol-gel Low Temperature Combustion Method

作　　者：姜丽霞[1] 孙晶[1] 于文生[1] 王媛[1] 王盛男[1] 姜慧远[1] 

机构地区：[1]长春理工大学化学与环境工程学院,长春130022

出　　处：《硅酸盐通报》2010年第6期1329-1332,共4页Bulletin of the Chinese Ceramic Society

摘　　要：采用溶胶-凝胶低温燃烧法制得了Yb,Ho∶GGG纳米粉体。X射线衍射分析结果表明900℃煅烧得结晶良好的Yb,Ho∶GGG纯相。IR光谱分析发现900℃煅烧的样品在617 cm-1附近出现一系列GGG的晶格振动吸收峰。SEM观察发现Yb,Ho∶GGG纳米粉体粒径在20 nm左右,粒度均匀,无团聚。荧光光谱分析表明样品的最强发射峰位于1200 nm,是由Ho3+的5I6-5I8能级跃迁引起的荧光发射,且发现Yb3+-Ho3+间存在能量传递。In this paper,pure gallium gadolinium garnet（GGG） nano-powders codoped with Yb3＋and Ho3＋ were prepared via sol-gel low combustion method.X-ray diffraction showed that the sample completely crystallized after calcined at 900 ℃.IR analysis showed the peaks appeared at 617 cm-1 were lattice vibration of GGG.Further,SEM showed Yb,Ho∶GGG powders had a narrow size distribution with particle size of approximately 20 nm.The fluorescence spectra showed the strongest fluorescence emission peak was 1200 nm,corresponding to the 5I6-5I8 of Ho3＋,the Yb3＋ and Ho3＋ have energy transfer.

关 键 词：Yb Ho∶GGG 纳米粉体 凝胶-凝胶低温燃烧法 

分 类 号：O782[理学—晶体学]