| 掺镁近化学计量比铌酸锂晶体的生长 |
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| 引用本文： | 姚淑华,王继扬,刘宏,胡小波,张怀金,吴剑波,秦晓勇. 掺镁近化学计量比铌酸锂晶体的生长[J]. 硅酸盐学报, 2007, 35(3): 281-284 |
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| 作者姓名： | 姚淑华 王继扬 刘宏 胡小波 张怀金 吴剑波 秦晓勇 |
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| 作者单位： | 山东大学,晶体材料国家重点实验室,济南,250100;中电科技德清华蓥电子有限公司,德清,313200,浙江 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 用改进的提拉技术从富锂[摩尔比n(Li2O)/n(Nb2O5)=58.5/41.5]熔体中生长了φ40mmx60mm的掺镁近化学计量比铌酸锂(LiNbO3)晶体.利用X荧光光谱分析了晶体中铌离子(Nb5 )和镁离子(Mg2 )的含量.通过紫外吸收和红外吸收峰研究了晶体中缺陷的结构,初步断定晶体中Mg2 的掺杂浓度已达到抗光伤阈值的浓度.生长晶体的比热容[O.69J/(g·K)]高于同成分LiNbO3晶体的比热容[O.64J/(g·K)].
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| 关 键 词： | 掺镁铌酸锂晶体 近化学计量比 提拉法 |
| 文章编号： | 0454-5648(2007)03-0281-04 |
| 修稿时间： | 2006-11-15 |
GROWTH AND CHARACTERISTICS OF MAGNESIUM-DOPED NEAR-STOICHIOMETRIC LITHIUM NIOBATE CRYSTAL |
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| YAO Shuhua,WANG Jiyang,LIU Hong,HU Xiaobo,ZHANG Huaijin,WU Jianbo,QING Xiaoyong. GROWTH AND CHARACTERISTICS OF MAGNESIUM-DOPED NEAR-STOICHIOMETRIC LITHIUM NIOBATE CRYSTAL[J]. Journal of The Chinese Ceramic Society, 2007, 35(3): 281-284 |
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| Authors: | YAO Shuhua WANG Jiyang LIU Hong HU Xiaobo ZHANG Huaijin WU Jianbo QING Xiaoyong |
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| Affiliation: | 1, State Key Laboratory of Crystal Materials, Shandong University, Shandong, Jinan 250100; 2, Deqing Huaying Electronics Company, Deqing 313200, Zhejiang, China |
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| Abstract: | An magnesium(MgO)-doped near-stoichiometric lithium niobate crystal(MgO:SLN)of 40 mm in diameter and 60 mm in length was grown by an improved Czochralski technique from a 58.5%(in molar fraction,the same below)Li melt doped with 2% MgO in a platinum crucible.The concentration of Nb 5 and Mg 2 in the growth crystal was measured by X-ray fluorescence.The defects structure of MgO:SLN was investigated by ultraviolet absorption spectra and infrared absorption spectra.The MgO:SLN crystal exhibited a shorter absorption edge wavelength,and the OH-infrared absorption band showed that the MgO doping concentra-tion of the MgO:SLN crystal exceeded the optical damage resistance threshold concentration.The specific heat capacity of the crystal was measured to be 0.69 J/(g.K)and was higher than that of congruent LiNbO3(CLN)crystal 0.64 J/(g.K). |
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| Keywords: | magnesium-doped lithium niobate crystal near-stoichiometric Czochralski method |
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