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ε３３＝１２７，ε１１＝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 ε33 and ε11) at room temperature are 127 and 376 respectively. The cleavage face and chemical inhomogeneity are the main factors of cracking.
参考文献
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