摘要
采用改进的热交换法生长的蓝宝石晶体,气泡是其主要缺陷之一。本文采用数值模拟研究了晶体生长过程中氦气流量对坩埚内温场、固液界面形状的影响。并结合晶体生长实验结果,分析了在实际的晶体生长过程中,氦气流量的线性增加对晶体内气泡的尺寸、形态和分布的影响。
The bubbles were observed as one of the main defects in the as-grown sapphire crystal grown by modified heating exchange method（HEM）.The influence of helium flux on thermal field and solid-liquid interface shape in the crucible during growth process were studied using numerical simulation.The influence of Helium flux on the size,shape and distribution of bubbles in the crystal were studied by considering simulation results and experimental results.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2012年第1期42-46,共5页
Journal of Synthetic Crystals
关键词
蓝宝石晶体
改进热交换法
气泡
氦气流量
数值模拟
sapphire crystal
modified HEM method
bubbles
Helium flux
numerical simulation
