期刊
GEOCHEMISTRY INTERNATIONAL
卷 57, 期 3, 页码 331-340出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0016702919030054
关键词
germanate glasses; Raman spectroscopy; structure of glasses
资金
- Russian Foundation for Basic Research [16-35-60045, 18-05-00079]
- Russian Federation [MK-5863.2016.5]
Glasses of the three-component Li2O-K2O-GeO2 system are studied by Raman spectroscopy. Spectra are curve-fitted and the main structural units formed in the system are established. Conditions of formation of highly coordinated germanium atoms are determined and non-statistic distribution of network-modifying cations is found. It is shown that lithium for potassium substitution is accompanied by a change of coordination number of germanium, which could cause the destruction of Ge-O-Ge bonds with formation of non-bridging oxygens.
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