本文采用高温溶液法生长了不同掺质浓度的较大尺寸掺Nd3+和Nb5+KTP(KTNNP)晶体，以X射线单晶衍射仪测定了所生长晶体的晶胞参数，以等离子发射光谱(ICP-AES)法系统测定了晶体中的掺质浓度。实验结果显示，掺Nd3+和Nb5+后，KTP晶体生长习性和形态发生了很大的变化，而且体系中Nd3+的分配系数明显增大，并随Nb5+浓度的增大而增大，从而体现了Nb5+对Nd3+的协同效应。另外，掺质后，晶体的单胞体积一般略有增大，但未呈现出规律性。
The Nd3+ and Nb5+ doped KTP(KTNNP) crystals with different dopant concentrations have been grown in high temperature solutions.The lattice parameter of the crystals have been determined by X-ray diffractometer,and the concentrations of the dopants in the crystals have been measured systematically by ICP-AES.The result of the experiments shows that the growth habit and the morphology of KTP crystal have changed greatly and the distribution coefficient of Nd3+ has increased obviously after the doping of Nd3+ and Nb5+ in the crystal growth system,the latter incarnates the cooperation effect of Nb5+ on Nd3+.Otherwise,the volume of the crystal unit cell increase slightly with no regularity after doping.
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