硅酸盐学报2016，Vol.44Issue(10)：1435-1439,5.DOI:10.14062/j.issn.0454-5648.2016.10.07
大尺寸四硼酸锂压电晶体转向生长
An Alternative Approach for Growth of Large Size Li2B4O7 Piezocrystals
摘要
Abstract
Lithium tetraborate (Li2B4O7: LBO) single crystal is a superior substrate material for surface acoustic wave (SAW) and body acoustic wave (BAW) devices. LBO crystals with the diameter of 76mm have been mass-produced by the modified vertical Bridgman method. However, the yield is rather low for LBO crystals with the diameter of 102mm due to high viscosity of its melt and cracking. In this paper, LBO crystals with the diameter of 102mm were prepared by an alternative method based on the characteristic feature of the vertical Bridgman method. LBO block with the sizes of 60mm×110mm×120mm was grown along [001] direction with (110) main face, and the as-grown block was cut and ground to a [110]-oriented LBO boule with the diameter of 102mm. The growth rate and the yield are improved.关键词
四硼酸锂晶体/坩埚下降法/大尺寸晶体生长/转向晶体生长Key words
lithium tetraborate crystal/vertical Bridgman method/large size crystal growth/alternative approach for crystal growth分类
数理科学引用本文复制引用
徐家跃,李欣,陆宝亮,申慧,侍敏莉,张爱琼..大尺寸四硼酸锂压电晶体转向生长[J].硅酸盐学报,2016,44(10):1435-1439,5.基金项目
国家自然科学基金项目(51472263)。 （51472263）
