导模法生长微孔蓝宝石晶体工艺及性能研究  

Micro-tube Sapphire Crystal Grown by the Edge-defined-film Fed Method

作　　者：王东海[1] 薛艳艳 李纳 周仕明[1] 徐晓东 李东振 徐军[1] 王庆国[1] WANG Dong-Hai;XUE Yan-Yan;LI Na;ZHOU Shi-Ming;XU Xiao-Dong;LI Dong-Zhen;XU Jun;WANG Qing-Guo(Institute for Advanced Study,School of Physics Science and Engineering,Tongji University,Shanghai 200092,China;School of Physics and Electronic Engineering,Jiangsu Normal University,Xuzhou 221116,China)

机构地区：[1]同济大学物理科学与工程学院,高等研究院,上海200092 [2]江苏师范大学物理与电子工程学院,徐州221116

出　　处：《无机材料学报》2019年第12期1290-1294,共5页Journal of Inorganic Materials

基　　金：国家自然科学基金(61605069,61805177);国家重点研发计划(2016YFB1102202)~~

摘　　要：采用导模法生长了内孔径470 m的蓝宝石晶棒和内孔径160 m板形蓝宝石晶体。基于求解拉普拉斯方程的数值解,得到生长界面处微孔的熔体膜轮廓曲线,采用插入钼丝的方法设计了生长模具以形成和维持晶体内的微孔尺寸,同时解决了微孔蓝宝石长晶生长过程中的两个难点:(1)获得高质量的蓝宝石晶体;(2)在蓝宝石晶体中形成并维持所需的内孔尺寸。所生长的晶体透明完整、无开裂、双晶摇摆曲线测定显示其衍射半峰宽为3.8,具有良好的结晶质量.Sapphire rod with micro-tube(inner diameter:470 m)and sapphire plate with micro-tube(inner di-ameter:160 m)were grown by the edge-defined-film fed method(EFG).Profile curves of the small liquid menisci were investigated on the base of numerical solution of the Young-Laplace equation.By inserting Mo wires,new type of die was designed to form and sustain size of micro-tube in the volume of the crystal.Two problems were solved at the same time:1)obtaining high quality sapphire crystal;2)forming and sustaining necessary micro-tube sizes in the volume of the crystal.The crystal were transparent,colorless,no cracking and good XRC value of 3.8 arcmin,demonstrating the high quality of the as-grown crystal.

关 键 词：微孔蓝宝石晶体 导模法 晶体生长 

分 类 号：O782[理学—晶体学]