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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Refractive index-structure correlations in Na2O-Al2O3-SiO2 glasses
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Refractive index-structure correlations in Na2O-Al2O3-SiO2 glasses

机译：Na2O-Al2O3-SiO2玻璃的折射率-结构相关性

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摘要

The current structural models have been used to analyse the refractive index data of Na2O-Al2O3-SiO2 glasses (Al2O3/Na2O less than or equal to 1). The SiO2 content is the sole factor that controls the refractive index. Values could be obtained for the factors with which each structural unit contributes in the refractive index. The content of Al2O3 or Na2O has no effect on the refractive index. The factors (differential refraction) are constant and do not change with composition. They have the same values for Na2O-SiO2 glasses. The differential refraction of a structural unit increases linearly with increasing the number of non-bridging oxygen ions. The difference of the contribution to the refractive index from a silicate unit to the next equals to a half of that for AlO4 tetrahedron. The effect could be attributed to the change in both the concentration and differential refraction of structural units. The obtained factors for the structural units are useful in calculating the refractive index with a high degree of accuracy. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 16]
机译：当前的结构模型已用于分析Na2O-Al2O3-SiO2玻璃（Al2O3 / Na2O小于或等于1）的折射率数据。 SiO 2含量是控制折射率的唯一因素。可以获得每个结构单元与折射率有关的因素的值。 Al 2 O 3或Na 2 O的含量对折射率没有影响。这些因素（微分折射）是恒定的，不会随组成变化。对于Na2O-SiO2玻璃，它们具有相同的值。结构单元的微分折射随非桥接氧离子数量的增加而线性增加。从硅酸盐单元到下一个单元对折射率的影响之差等于AlO4四面体的折射率的一半。该影响可归因于结构单元的浓度和微分折射的变化。所获得的结构单元的因子可用于高精度地计算折射率。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：16]

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