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A comparison of the structural role of Na+ network modifying cations in sodium silicate and sodium fluoroberyllate glasses

机译:Na +网络修饰阳离子在硅酸钠和氟铍酸钠玻璃中的结构作用比较

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摘要

Binary glasses in the sodium fluoride beryllium fluoride and soda silica systems have been studied previously using neutron diffraction and, in the present paper, the features in the real space correlation function, corresponding to the first A-X (A = Be, Si; X = F, O) and Na-X interactions are compared for the two systems. The first A-X peak shifts to significantly higher r for Na2O-SiO2 but not for NaF-BeF2 and it is concluded that this is an effect of charge balance. In 2 both cases the Na-X peak is skewed to high r due to the presence of two types of Na-X distance.
机译:以前已经使用中子衍射研究了氟化钠铍,氟化钠和苏打二氧化硅体系中的二元玻璃,并且在本文中,实空间相关函数中的特征对应于第一个AX(A = Be,Si; X = F ,O)和Na-X相互作用被比较为两个系统。对于Na2O-SiO2,第一个A-X峰移动到更高的r,但是对于NaF-BeF2,第一个A-X峰没有移动,因此可以得出结论,这是电荷平衡的影响。在这两种情况下,由于存在两种类型的Na-X距离,Na-X峰偏向高r。

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