OH-1 absorption bands of LiNbO3 with varying composition
Chen Hong-Jian(陈洪建)a), Shi Li-Hong(师丽红)b), Yan Wen-Bo(阎文博)a)†, Chen Gui-Feng(陈贵锋)a), Shen Jun(沈俊)a), and Li Yang-Xian(李养贤)a)
a School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China; b Tianjin Institute of Urban Construction, Tianjin 300384, China
Abstract This paper reports that OH-1 absorption bands of lithium niobate crystal have been measured at room temperature, and the band shape depending on the crystal composition has been observed. The OH-1 absorption bands are fitted with three Lorentzian peaks by varying position, halfwidth, and height. Nearly constant peak positions (3468, 3481 and 3490 cm-1) are obtained for all samples. It shows that the height and area of the decomposed peaks vary with the Li composition in a complex way. However, the combinations of these fitting parameters show a linear dependence on the composition up to nearly 50~mol%, which is very useful for the composition determination in a wide range. The linear relationships between the parameter combinations and Li composition are also presented quantitatively. In addition, the explanations were given for the excellent composition linearity of parameter combinations.
Received: 07 November 2008
Revised: 24 December 2008
Accepted manuscript online:
Fund: Project supported by Natural
Science Foundation of Hebei Province of China (Grant No
F2007000119), Scientific Research Foundation of Education Bureau of
Hebei Province of China (Grant No 2008113), Technology Development
Foundation of Higher Educational Institutions of Tianjin of China
(Grant No 20070502), and the Natural Science Foundation of Tianjin in 2009.
Cite this article:
Chen Hong-Jian(陈洪建), Shi Li-Hong(师丽红), Yan Wen-Bo(阎文博), Chen Gui-Feng(陈贵锋), Shen Jun(沈俊), and Li Yang-Xian(李养贤) OH-1 absorption bands of LiNbO3 with varying composition 2009 Chin. Phys. B 18 2372
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