拉曼光谱
铌酸钾
铌酸锂
铁电性
材料科学
红外光谱学
离子
谱线
红外线的
Crystal(编程语言)
八面体
反对称关系
分析化学(期刊)
光学
晶体结构
化学
结晶学
光电子学
物理
有机化学
色谱法
天文
计算机科学
电介质
数学物理
程序设计语言
作者
Youbao Wan,Yong Guo,Yuan Xian-Zhang,Jing Chen,Junhao Chu
标识
DOI:10.1109/icsict.2001.981607
摘要
Crack free potassium lithium niobate (KLN) single crystals have been grown by the resistance heating Czochralski technique. Homogeneous and crack free samples of about 6/spl times/6/spl times/7 mm were used to study the lattice vibration spectra using Raman and infrared reflectivity spectroscopy. The results showed that the influence of Li ions in the C sites in the KLN crystal on the characteristic Raman and infrared reflectivity spectra of the Nb-O octahedral ions is striking. In particular, the symmetric bend vibration mode /spl nu//sub 5/ was split into three Raman lines, the antisymmetric bend vibration mode /spl nu//sub 4/ in the infrared spectrum was also split into three lines, and the antisymmetric stretch vibration mode /spl nu//sub 3/ was broadened greatly and split slightly. The crystals obtained by this method have good quality and second harmonic generation properties.
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