Nd：GdNbO4的制备、结构与发光  

Preparation,structure and luminescence of Nd:GdNbO_4

作　　者：谭晓靓[1,2] 蒋庆辉[3] 张庆礼(指导)[1] 宁凯杰[1,2] 周文龙[1,2] 殷绍唐[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所,安徽省光子器件与材料重点实验室,安徽合肥230031 [2]中国科学院研究生院,北京100049 [3]云南铝业股份有限公司,云南昆明650502

出　　处：《量子电子学报》2011年第5期551-557,共7页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(50772112,50872135,90922003);安徽省优秀青年基金(08040106820);中国科学院重要方向性项目(YYYJ-1002)资助

摘　　要：用高温固相法合成了Nd^(3+):GdNbO_4多晶,确定了它的结构,研究了它的光致发光。Nd^(3+):GdNbO_4是单斜结构,空间群为I_(2/a)。采用内标法,测定了(1 at%)Nd:GdNbO_4的晶格参数。用Rietveld精修方法给出了Nd^(3+):GdNbO_4的原子坐标。在808 nm光激发下,观察到925 nm、1065 nm、1345 nm三个发射带,分别来自于Nd^(3+)的~4F_(3/2)→I_(9/2)、~4I_(11/2)、~4I_(13/2)跃迁,以1065 nm处~4F_(3/2)→~4I_(11/2)的发射谱带强度最强。分析表明Nd^(3+)在GdNbO_4有很强的晶场作用,是一种潜在的新型激光材料。The polycrystMline Nd3＋：GdNbO4 was synthesized by high temperature solid-state reaction method, its structure was determined and its luminescence was studied. Nd3＋：GdNbO4 is monoclinic with the space group I2/α. The lattice parameters of （1 at%） Nd：GdNbO4 was determined by an internal standard method. The atom coordinates of Nd3＋：GdNbO4 were obtained by Rietveld refinement. Three emission bands of 925 nm, 1065 nm and 1345 nm under 808 nm light excitation were observed, which are from the transitions 4F3/2→2I9/2、4I11/2、4I13/2of Nd3＋ ion, respectively. The strongest emission peaks at 1065 nm from the transition 4F3/2 →4 I11/2 of Nd3＋. The study indicates that Nd3＋ in GdNbO4 has strong crystal field interaction, and it is a potential laser material.

关 键 词：材料 结构 X射线衍射 Nd^3+:GdNbO4 发光 

分 类 号：TN244[电子电信—物理电子学]