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| 钽酸锂晶体组分的OH-红外吸收光谱测定方法 | |
| 引用本文： | 师丽红,阎文博,孔勇发.钽酸锂晶体组分的OH-红外吸收光谱测定方法[J].物理实验,2006,26(12):12-15. |
| 作者姓名： | 师丽红 阎文博 孔勇发 |
| 作者单位： | 1. 天津城市建设学院,物理系,天津,300384 2. 河北工业大学,材料科学与工程学院,天津,300130 3. 南开大学,天津市信息光子材料与技术重点实验室,天津,300071 |
| 摘 要： | 研究了钽酸锂晶体Li含量(组分)的OH-红外吸收谱测定方法.利用气相输运平衡的方法制备不同组分的钽酸锂晶体样品,使用三峰结构对钽酸锂晶体的OH-吸收谱进行拟合,考虑了晶体中H 的浓度对拟合参量的影响,并发现位于3 461 cm-1的分解峰L的半高宽不受晶体中H 浓度的影响,具有很好的稳定性,非常适宜用来进行钽酸锂晶体组分的确定,最后给出了该峰的半高宽(ΓL)对组分(CLi)的依赖关系. |
| 关 键 词： | 钽酸锂晶体 OH-吸收谱 本征缺陷 |
| 文章编号： | 1005-4642（2006）12-0012-04 |
| 收稿时间： | 2006-05-12 |
| 修稿时间： | 2006年5月12日 |
Determining the composition of lithium tantalate using the OH- infrared absorption bands |
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| SHI Li-hong,YAN Wen-bo,KONG Yong-fa.Determining the composition of lithium tantalate using the OH- infrared absorption bands[J].Physics Experimentation,2006,26(12):12-15. | |
| Authors: | SHI Li-hong YAN Wen-bo KONG Yong-fa |
| Institution: | 1. Department of Physics, Tianjin Institute of Urban Construction, Tianjin 300384, China;2. School of Material Science and Engineering, Hebei University of Technology, Tianjing 300130, China; 3. Tianjin Key Lab of Photonics Material and Technology for Information Science, Nankai University, Tianjin 300071, China |
| Abstract: | In this paper,we study the method to determine the composition of lithium tantalate using the OH~-infrared absorption bands.The OH~-infrared absorption bands are fitted with three Lorentzian functions by varying the parameters like position,half width,and area.Almost constant peak positions for each component are observed,which are about 3 461,3 475 and 3 486 cm~(-1),respectively.The results of hydrogenation firstly show that only the half width of the peak at wave number of 3 461 cm~(-1) is unchanged with hydrogen incorporate, which can be used to determine the composition of LiTaO_3 crystals,and the quantitative relationships between the line width of OH~-absorption peak(3 461 cm~(1)) and the crystal composition are presented. |
| Keywords: | lithium tantalate OH~-infrared absorption intrinsic defect |
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