| 掺镁铌酸锂晶体的缺陷结构 |
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| 引用本文： | 张启仁. 掺镁铌酸锂晶体的缺陷结构[J]. 苏州科技学院学报(社会科学版), 1992, 0(Z1) |
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| 作者姓名： | 张启仁 |
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| 作者单位： | 铁道师院物理系 |
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| 基金项目： | 中国国家自然科学基金资助 |
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| 摘 要： | 本文提出了Mg:LiNbO_3晶体中可能存在的随掺镁浓度变化的两套缺陷结构模型。作者制备了一组不同格镁浓度的Mg:LiNbO_3晶体样品,测量了它们的密度,并用提出的缺陷结构摸型计算了它们的密度,以验证缺陷结构摸型。研究表明,本文的第二套摸型,实验结果和理论计算结果相符。本文的计算再次指出一致熔化组分Mg:LiNbO_3晶体呈现掺镁浓度阈值效应的临界掺镁浓度应是5.30mol％。
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| 关 键 词： | 缺陷结构 密度 阈值效应 |
Defect Structures of Mg-Doped Lithium Niobate |
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| Zhang Qiren. Defect Structures of Mg-Doped Lithium Niobate[J]. Journal of University of Science and Technology of Suzhou:Social Science, 1992, 0(Z1) |
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| Authors: | Zhang Qiren |
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| Affiliation: | Department of Physics |
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| Abstract: | In this paper, two sets of defect structure models formed in Mg:LiNbO3 varying with Mg concentrations are proposed. In order to determine the defect models, the density of a group of Mg:LiNbO3 crystal samples doped with different Mg concentration is measured. The density of the crystals is also calculated. The results indicate that the defect models of set 2 are in good agreement with the experimental results. It is further predicted by the calculation that the critical Mg concentration of the the Mg-doping level threshold effect for congruent Mg:LiNbO3 should be 5.30mol%. |
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| Keywords: | defect structure LiNbO_3 density impurity concentration threshold |
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