Phase relations of the Li2O-Ta2O5-B2O3 and Li2O-WO3-B2O3 systems and promising nonlinear optical compounds in K2O-Ta2O5-B2O3 system

被引：3
|
作者：
Cai, Gemei [1 ]
Wang, W. Y. [1 ]
Li, M. [1 ]
Lou, Y. F. [1 ,2 ]
Sun, Y. P. [1 ]
Chen, X. L. [1 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China
[2] Beihang Univ, Sch Sci, Ctr Condensed Matter & Mat Phys, Beijing 100083, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2009年 / 44卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Inorganic compounds; Optical materials; X-ray diffraction; Crystal structure; Phase equilibria; NEUTRON POWDER-DIFFRACTION; CRYSTAL-STRUCTURE; TEMPERATURE FORM; TRANSITION; BORATE; GENERATION; CHEMISTRY; METALS; D(0);
D O I：
10.1016/j.materresbull.2008.03.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The subsolidus phase equilibria of the Li2O-Ta2O5-B2O3, K2O-Ta2O5-B2O3 and Li2O-WO3-B2O3 systems have been investigated mainly by means of the powder X-ray diffraction method. Two ternary compounds, KTaB2O6 and K3Ta3B2O12 were confirmed in the system K2O-Ta2O5-B2O3. Crystal structure of compound KTaB2O6 has been refined from X-ray powder diffraction data using the Rietveld method. The compound crystallizes in the orthorhombic, space group Pmn2(1) (No. 31), with lattice parameters a = 7.3253(4) angstrom, b = 3.8402(2) angstrom, c = 9.3040(5) angstrom, z = 2 and D-calc = 4.283 g/cm(3). The powder second harmonic generation (SHG) coefficients of KTaB2O6, and K3Ta3B2O12 were five times and two times as large as that of KH2PO4 (KDP), respectively. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：189 / 193
页数：5
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