摘要
使用数控焰熔法晶体生长炉生长钛酸锶单晶体,研究了气体参数、生长速度和退火工艺参数对晶体生长的影响。在氢氧比为2.5,等径生长速度保持在10mm·h^-1,生长出了直径26mm、等径长度20mm、总长40mm的钛酸锶单晶体,然后经过1550℃×72h+1000℃×20h+600℃×24h的退火,消除钛酸锶单晶体的热应力和氧空位,得到完整的高品质的单晶体。偏光显微镜测试表明,晶体具有很好的完整性。
Strontium titanate monocrystals were grown by numerical control flame melting furnace. The influences of gas parameters,growth rate and annealing process parameters on crystal growth were studied. At the hydrogen-oxygen ratio of 2.5,the isopach growth rate was maintained at 10 mm·h^-1 ,trontium titanate monocrystals with a diameter of 26 mm,an isodiametric length of 20 mm and a total length of 40 mm were grown. Then after 1550 ℃× 72 h + 1000 ℃× 20 h + 600 ℃× 24 h annealing,elimination of strontium titanate thermal stress of single crystal and oxygen vacancies,get complete high quality single crystal. Polarized light microscopy showed that the crystal had good integrity.
作者
邢彩凤
毕孝国
孙旭东
XING Cai-feng;BI Xiao-guo;SUN Xu-dong(College of Environmental and Chemical Engineering,Dalian University,Dalian 116622,China;School of New Energy,Shenyang Institute of Engineering,Shenyang 110136,China)
出处
《人工晶体学报》
EI
CAS
北大核心
2019年第5期817-821,共5页
Journal of Synthetic Crystals
基金
国家自然科学基金(51472047)
2017沈阳市双百工程(重大科技研发)项目(Y17-0-008)
关键词
数控焰熔法
单晶体
钛酸锶
numerical control flame melting method
single crystal
strontium titanate
