Raman and infrared spectroscopy studies of LiNbO3 in niobate glass-ceramics
Raman and infrared spectroscopy studies of LiNbO3 in niobate glass-ceramics
复制标题
铌酸盐微晶玻璃中铌酸锂的拉曼光谱和红外光谱研究
DOI：
10.1016/s0022-3697(97)00228-x
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发表时间：
1998
影响因子：
4
通讯作者：
A. Sombra
中科院分区：
文献类型：
--
作者：
E. B. Araujo;J. A. C. Paiva;J. Freitas;A. Sombra
用X射线粉末衍射光谱研究了组成为[xNb 2 O 5·（50 − x）P2 O 5·50 Li 2 O]：yFe 2 O3的锂磷酸盐玻璃的光学和结构性质。通过X射线粉末衍射确认了在热处理下的样品10 Nb 2 O 5 - 40 P2 O 5 - 5 OLi 2 O：2Fe 2 O3中铁电LiNbO 3晶体的析出。观察到了LiPO 3、LiP 2 O 7和Li 3 PO 4等不同复杂程度的晶化过程组。红外光谱和拉曼光谱的结果表明，Nb_2O_5 P_2O_5的比例的增加导致铌的八面体对称的网站，从而形成铁电铌酸锂，如通过X射线衍射分析观察到的。
Optical and structural properties of lithium niobophosphate glasses, with composition [xNb2O5· (50 − x)P2O5· 50Li2O]:yFe2O3, were studied by X-ray powder diffraction, in spectroscopies. Precipitation of ferroelectric LiNbO3crystals was confirmed by X-ray powder diffraction in the sample 10Nb2O5− 40P2O5− 5OLi2O:2Fe2O3, under heat treatment. The crystallization process groups of different degrees of complexity, such as LiPO3, LiP2O7and Li3PO4, were observed. The infrared and Raman spectroscopy results suggest that the increase of the ratio Nb2O5P2O5leads the niobium to sites of octahedral symmetry and consequently to the formation of ferroelectric LiNbO3, as observed by X-ray diffraction analysis.