Structure refinement of nonlinear optical material K0.97Ti0.97Nb0.03OPO4

被引:10
作者
Moorthy, SG
Kumar, FJ
Subramanian, C
Bocelli, G
Ramasamy, P [1 ]
机构
[1] Anna Univ, Ctr Crystal Growth, Chennai 600025, India
[2] CNR, Ctr Studio Strutturist Diffrattometr, I-43100 Parma, Italy
关键词
potassium titanyl phosphate; niobium substitution; flux method; X-ray diffraction analysis; structure refinement; lattice parameters; nonlinear optical material;
D O I
10.1016/S0167-577X(98)00054-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
KTP crystals doped with niobium were grown by spontaneous crystallization using K6P4O13 as the solvent. Crystal structure of K0.97Ti0.97Nb0.03OPO4 was refined by using single crystal X-ray diffraction data. The structure is orthorhombic (space group Pna2(1)) with cell parameters a = 12.816(3) Angstrom, b = 6.403(2) Angstrom, c = 10.580(3) Angstrom. Substitution of Ti4+ by Nb5+ was charge compensated by formation of potassium vacancies in the K(1) site. Growth layers observed on the surface of the crystals using optical microscope indicated two-dimensional growth mechanism. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:266 / 270
页数:5
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