硅酸盐学报2012，Vol.40Issue(6)：905-909,5.
导模法生长蓝宝石晶体的退火工艺
Annealing Process of Sapphire Crystal Grown by Edge Defined Film Fed Growth Method
摘要
Abstract
Sapphire single crystal ribbon was grown via an edge defined film fed growth (EFG) method. The carbon volatilization in a graphite heater at high temperatures results in some black inclusions in tail crystal and color center in the crystal. In order to eliminate black inclusions and color center in the crystal, the sapphire crystal grown was annealed by different annealing processes. The black inclusions in tail crystal disappear and the crystal became colorless and transparent after annealing in air at a cooling velocity of 50 ℃/h and 1 500 ℃ for 20h. For the crystal sample after annealing in H2 at 1 600 ℃ for 37h, the absorption peak at 205nm caused by F color center and the absorption shoulder at 200-230 nm caused by Fe^3+ is disappeared. The results indicate that high temperature hydrogen annealing is a promising annealing method to eliminate the F color center and the absorption shoulder at 200-230 nm caused by the Fe^3+ in the sapphire crystal grown by EFG method.关键词
蓝宝石单晶/导模法/包裹体/色心/退火Key words
sapphire single crystal/edge defmed film fed growth/inclusion/color center/annealing分类
数理科学引用本文复制引用
于海欧,李红军,徐军,杨秋红,胡克艳,陈伟超..导模法生长蓝宝石晶体的退火工艺[J].硅酸盐学报,2012,40(6):905-909,5.基金项目
上海市科学技术委员会（10ZR1434200）资助项目. （）
