Comments on the application of optical basicity to glass
Comments on the application of optical basicity to glass
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DOI：
10.1016/s0022-3093(05)80385-0
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发表时间：
1992
影响因子：
3.5
通讯作者：
J. Duffy;M. Ingram
中科院分区：
文献类型：
--
作者：
J. Duffy;M. Ingram
玻璃的光学碱度可以通过分配给组成氧化物的参数和化学计量来计算。这样的计算，当应用于玻璃体系中的一系列组合物时，表明了碱度的趋势，这通常接近于用探针离子（如Pb2+）实验得到的结果。预测光学碱度与实验光学碱度之间的偏差可以用于检测关键现象，例如，在na2o单键dp2o5玻璃体系中，Pb2+表示1:1组成下的光学碱度步长。利用电负性关系对UV不透明材料（如Pb2+的光谱无法测量）的光学碱度进行了严格评估，并将结果与折射率测量结果进行了比较。给出了包括MnO和FeO在内的14种氧化物的指定光学碱度值（两者的值均为1.0）。
The optical basicity of a glass can be calculated from parameters assigned to constituent oxides and the stoichiometry. Such calculations, when applied to a series of compositions in a glass system, indicate the trend in basicity and this is usually close to that obtained experimentally using probe ions such as Pb2+. Deviations between predicted and experimental optical basicity can be useful for detecting critical phenomena as, for example, in the Na2Osingle bondP2O5glass system where Pb2+indicates an optical basicity step at the 1:1 composition. The determination of optical basicity for UV opaque materials (where spectra of ions such as Pb2+cannot be measured) using electronegativity relationships is critically assessed, and results are compared with those obtained from refractivity measurements. Assigned optical basicity values are given for 14 oxides including MnO and FeO (both of which have the value of 1.0).