用高温固相法合成了Nd3+:GdNbO4多晶,确定了它的结构,研究了它的光致发光.Nd3+:GdNbO4是单斜结构,空间群为I2/a.采用内标法,测定了(1 at％) Nd:GdNbO4的晶格参数.用Rietveld精修方法给出了Nd3+:GdNbO4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Nd3+的4F3/2→4 I9/2、4I11/2、4I13/2跃迁,以1065 nm处4F3/2-→4 I11/2的发射谱带强度最强.分析表明Nd3+在GdNbO4有很强的晶场作用,是一种潜在的新型激光材料.
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