| 近化学计量比铌酸锂晶体生长的新方法 |
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| 引用本文： | 吴剑波,姚淑华,夏宗仁,秦小勇,高磊,刘宏,王继扬. 近化学计量比铌酸锂晶体生长的新方法[J]. 硅酸盐学报, 2008, 36(5): 608-611 |
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| 作者姓名： | 吴剑波 姚淑华 夏宗仁 秦小勇 高磊 刘宏 王继扬 |
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| 作者单位： | 中电科技德清华莹电子有限公司,浙江,德清,313200;山东大学,晶体材料国家重点实验室,济南,250100;中电科技德清华莹电子有限公司,浙江,德清,313200;山东大学,晶体材料国家重点实验室,济南,250100 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 在计算机温场模拟的基础上,探索设计了悬挂式双坩埚和均匀加料装置.在富锂(Li2O摩尔分数为58.5%)熔体中采用提拉法生长了φ50mm×50mm的近化学计量比铌酸锂晶体.测量结果表明:晶体的紫外吸收边发生了明显的蓝移,测得Li摩尔分数达到49.87%.利用干涉仪测量样品的光学均匀性,生长晶体均方根折射率不均匀性△n=7.250×10-5cm-1.
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| 关 键 词： | 铌酸锂 近化学计量比 提拉法 悬挂式双坩埚 |
| 文章编号： | 0454-5648(2008)05-0608-04 |
| 修稿时间： | 2007-08-05 |
A NEW CRYSTAL GROWTH METHOD FOR THE GROWTH OF NEAR-STOICHIOMETRIC LiNbO3 |
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| WU Jianbo,YAO Shuhua,XIA Zongren,QIN Xiaoyong,GAO Lei,LIU Hong,WANG Jiyang. A NEW CRYSTAL GROWTH METHOD FOR THE GROWTH OF NEAR-STOICHIOMETRIC LiNbO3[J]. Journal of The Chinese Ceramic Society, 2008, 36(5): 608-611 |
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| Authors: | WU Jianbo YAO Shuhua XIA Zongren QIN Xiaoyong GAO Lei LIU Hong WANG Jiyang |
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| Abstract: | By means of temperature field computer design, a new crystal growth method called the hanging double crucible pulling method was developed. With a steady polyerystalline raw material feeding rate, near-stoichiometrie lithium niobate (NSLN) crystal (φ50 mm×50 mm) has been successfully grown in Li-rich melt (with Li2O mole fraction (the same below) of 58.5%). The absorption spectrum of the crystal shows that when the Li content reaches 49.87%, an obvious ultraviolet absorption edge shift occurs. The opti-cal homogeneity of the NSLN crystal was measured by a laser interferometer. Refractive index inhomogeneity (root mean square) An of the NSLN crystal is 7.250×10-5Cm-1. |
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| Keywords: | lithium niobate near-stoichiometric Czochralski method hanging double crucible |
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