The correlation of MgO-doped near-stoichiometric LiNbO3 composition to the defect structure

被引：109

作者：

Furukawa, Y

Kitamura, K

Takekawa, S

Niwa, K

Yajima, Y

Iyi, N

Mnushkina, I

Guggenheim, P

Martin, JM

机构：

[1] Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 3050044, Japan

[2] Deltron Crystal Ind Inc, Dover, NJ 07801 USA

来源：

JOURNAL OF CRYSTAL GROWTH | 2000年 / 211卷 / 1-4期

基金：

日本科学技术振兴机构;

关键词：

lithium niobate; TSSG; stoichiometry; optical damage; defect structure;

D O I：

10.1016/S0022-0248(99)00794-0

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Undoped and MgO-doped LiNbO3 single crystals with near-stoichiometric compositions were grown from K2O-doped melts and Li-rich melts by two different growth techniques. Near-stoichiometric LiNbO3 single crystals. having large [Li]/[Nb] ratios of 0.988-0.993. showed smaller threshold concentrations of MgO than congruent crystals for the behavior of Curie temperature. OH absorption band and optical damage properties. We discuss the ideal defect structure models, and find that the Li-site vacancy model is consistent with the experimental results for MgO-doped near-stoichiometric LiNbO3 single crystals. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

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页码：230 / 236

页数：7

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