Homogeneity of melt‐rocked Ge–Se glasses and the effect of impurities
Homogeneity of melt‐rocked Ge–Se glasses and the effect of impurities
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DOI：
10.1111/ijag.15874
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发表时间：
2021-02
影响因子：
2.1
通讯作者：
P. Lucas;S. Cui;Dmitriy P. Bayko;Ozgur Gulbiten;Garrett J. Coleman;J. Troles
中科院分区：
文献类型：
--
作者：
P. Lucas;S. Cui;Dmitriy P. Bayko;Ozgur Gulbiten;Garrett J. Coleman;J. Troles
研究了玻璃合成方法对锗硒玻璃性能的影响。用拉曼光谱和电子探针分析表征了950℃下机械对流法制备的GeSe4玻璃的均匀性。发现熔摇玻璃在所有长度尺度上都是化学和结构均匀的。为了比较合成方法的效果，在静态合成192小时后生产另一种玻璃。然后对其物理，结构和动态特性进行表征以进行比较分析。在相同的热历史条件下，两种玻璃的摩尔体积和结构是相同的。热容光谱法研究的GeSe4在静态和震荡玻璃中的结构动力学是相同的，并与GeSe9和GeSe3进行了比较。总的来说，这两种合成方法不会导致测量性质的任何差异。最后，在三个玻璃杯中考察了杂质的影响。高达30ppm水平的水和氧杂质的存在对物理和结构性质没有显著影响。因此，水杂质的存在不能归因于物理性质的不匹配。
The impact of glass synthesis methods on the properties of Ge-Se glasses is investigated. The homogeneity of a GeSe4 glass produced by mechanical convection in a rocking oven for 12 h at 950 degrees C is characterized by Raman spectroscopy and Electron Microprobe analysis. It is found that the melt-rocked glass is chemically and structurally homogeneous at all length scales investigated. In order to compare the effect of synthesis methods, another glass is produced following a static synthesis for 192 h. Their physical, structural, and dynamic properties are then characterized for comparative analysis. The molar volume and structure of both glasses are found to be identical when subjected to the same thermal history. The structural dynamics of GeSe4 investigated by heat capacity spectroscopy is identical for the static and rocked glass and also compared with that of GeSe9 and GeSe3. Overall, the two synthesis methods do not lead to any difference in measured properties. Finally, the effect of impurities is investigated in three glasses. The presence of water and oxygen impurities up to 30 ppm levels is shown to have no significant effect on physical and structural properties. Hence, the presence of water impurities cannot be attributed to mismatch in physical properties.