人工晶体学报2011，Vol.40Issue(6)：1363-1366,4.
近化学计量比7LiNbO3晶体的生长和基本性能
Growth and Basic Properties of Near-stoichiometric 7LiNbO3 Crystal
摘要
Abstract
For further investigation on the defects structure of lithium niobate crystal by neutron scattering technique, a near-stoichiometric isotope 7IiNb03 crystal was successfully grown by Czochralski method from a 58.5% 7Li melt with raw materials of Nb2O5 and 7LiOH. The weight of the as-grown crystal is about 35 g, the density at room temperature is 4. 634 g/cm , the melting point obtained from analysis of differential scattering calorimetry and thermalgravimetric ( DTA/TG) is 1223 t, and the crystal weight exhibits no variation over the room temperature to 1250 t. The average transmittance in the range of 500-3200 nm is approach to 74% , the OH" absorption peak is located at 2877 nm, and the 7Li content of the crystal judged from UV absorption edge method is 49.46%. The refractive index determined at 633 nm wavelength on c-cut slip is no =2. 2872 ,ree =2.1909.关键词
晶体生长/提拉法/同位素铌酸锂/化学计量比Key words
crystal growth/ Czochralski method/ isotope lithium niobate/ stoichiometric分类
数理科学引用本文复制引用
张娜娜,王继扬,韩淑娟,杨永娟..近化学计量比7LiNbO3晶体的生长和基本性能[J].人工晶体学报,2011,40(6):1363-1366,4.基金项目
国家自然科学基金(50872066) （50872066）
国家自然科学基金重点项目(51032004) （51032004）
国家重点基础研究发展计划(2010CB833103)资助项目 （2010CB833103）
