硅酸盐学报2007，Vol.35Issue(3)：281-284,4.
掺镁近化学计量比铌酸锂晶体的生长
GROWTH AND CHARACTERISTICS OF MAGNESIUM-DOPED NEAR-STOICHIOMETRIC LITHIUM NIOBATE CRYSTAL
摘要
Abstract
An magnesium(MgO)-doped near-stoichiometric lithium niobate crystal(MgO：SLN) of 40 mm in diameter and 60 mm in length was grown by an improved Czochralski technique from a 58.5% (in molar fraction，the same below) Li melt doped with 2% MgO in a platinum crucible．The concentration of Nb5+ and Mg2+ in the growth crystal was measured by X-ray fluorescence．The defects structure of MgO：SLN was investigated by ultraviolet absorption spectra and infrared absorption spectra．The MgO：SLN crystal exhibited a shorter absorption edge wavelength．and the OH- infrared absorption band showed that the MgO doping concentration of the MgO：SLN crystal exceeded the optical damage resistance threshold concentration．The specific heat capacity of the crystal was measured to be 0.69 J/(g·K) and was higher than that of congruent LiNbO3(CLN) crystal 0.64 J/(g·K)．关键词
掺镁铌酸锂晶体/近化学计量比/提拉法Key words
magnesium-doped lithium niobate crystal/near-stoichiometric/Czochralski method分类
数理科学引用本文复制引用
姚淑华,王继扬,刘宏,胡小波,张怀金,吴剑波,秦晓勇..掺镁近化学计量比铌酸锂晶体的生长[J].硅酸盐学报,2007,35(3):281-284,4.基金项目
国家基础研究计划(2004CB619002)助项目. （2004CB619002）
