铌酸钾锂晶体的生长与性能  

Growth and Properties of Potassium Lithium Niobate Single Crystals

作　　者：徐家跃[1] 林雅芳[1] 范世 

机构地区：[1]中国科学院上海硅酸盐研究所,上海200050

出　　处：《无机材料学报》2000年第4期747-750,共4页Journal of Inorganic Materials

基　　金：上海市青年科技启明星计划资助项目!(95QE14029)

摘　　要：使用坩埚下降法成功生长了尺寸为φ１０ｍｍ×５０ｍｍ、四方钨青铜结构、透明铌酸钾锂晶体，讨论了引起晶体开裂的主要原因，研究了该晶体的光透过性能和介电性能，室温下该晶体的介电常数ε_（３３）＝１２７，ε_（１１）＝３７６，居里温度为３８０℃．Potassium lithium niobate single crystals of 10mm in diameter and up to 45mm in length were grown by the modified Bridgman technique. The transmittance spectrum and dielectric property of as-grown crystal were measured. The wafer of as-grown KLN crystal has good transmittance from 400nm to 800nm. Dielectric constants ε_(33) and ε_(11) at room temperature are 127 and 376 respectively. The cleavage face and chemical inhomogeneity are the main factors of cracking.

关 键 词：铌酸钾锂晶体 坩埚下降法 晶体生长 激光器 

分 类 号：O782[理学—晶体学] TN248.404[电子电信—物理电子学]