| 钛酸锶单晶体生长工艺研究 |
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| 引用本文： | 邢彩凤,毕孝国,孙旭东.钛酸锶单晶体生长工艺研究[J].人工晶体学报,2019,48(5):817-821. |
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| 作者姓名： | 邢彩凤 毕孝国 孙旭东 |
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| 作者单位： | 大连大学环境与化学工程学院,大连 116622;沈阳工程学院新能源学院,沈阳 110136;沈阳工程学院新能源学院,沈阳,110136;大连大学环境与化学工程学院,大连,116622 |
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| 基金项目： | 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) |
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| 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。
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| 关 键 词： | 数控焰熔法 单晶体 钛酸锶 |
Growth Process of Strontium Titanate Single Crystal |
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| XING Cai-feng,BI Xiao-guo,SUN Xu-dong.Growth Process of Strontium Titanate Single Crystal[J].Journal of Synthetic Crystals,2019,48(5):817-821. |
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| Authors: | XING Cai-feng BI Xiao-guo SUN Xu-dong |
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| Institution: | (College of Environmental and Chemical Engineering,Dalian University,Dalian 116622,China;School of New Energy,Shenyang Institute of Engineering,Shenyang 110136,China) |
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| Abstract: | 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. |
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| Keywords: | numerical control flame melting method single crystal strontium titanate |
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