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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 >Relaxation in Ge2Se98 and As2Se98 glasses
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Relaxation in Ge2Se98 and As2Se98 glasses

机译：Ge2Se98和As2Se98玻璃中的弛豫

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摘要

Mercury dilatometry and differential scanning calorimetry were used to study structural relaxation of Ge2Se98 and As2Se98 glasses. Tool-Narayanaswamy-Moynihan model was used to fit the experimental data. Single set of volume and enthalpy relaxation parameters describing all performed measurements was determined for each studied glass. Volumetric and enthalpic TNM parameters were for both glasses compared with each other as well as with values for amorphous selenium determined earlier. The comparison of the apparent activation energy of structural relaxation with the activation energy of viscous flow was made for accessible low-Ge/As-content data in GexSe1-x and AsxSe1-x systems. Moreover, several non-fitting methods of TNM parameters estimation were applied to our data. A good agreement with curve-fitting results was achieved for most methods which is consistent with our previous results on amorphous selenium and polyvinyl acetate.
机译：用水银膨胀法和差示扫描量热法研究了Ge2Se98和As2Se98玻璃的结构弛豫。使用工具-Narayanaswamy-Moynihan模型拟合实验数据。对于每种研究的玻璃，确定一组描述所有执行的测量的体积和焓松弛参数。两种玻璃的体积和焓TNM参数相互比较，以及较早确定的非晶态硒的值。对于GexSe1-x和AsxSe1-x系统中可访问的低Ge / As含量数据，将结构弛豫的表观活化能与粘性流的活化能进行了比较。此外，TNM参数估计的几种非拟合方法被应用于我们的数据。大多数方法均与曲线拟合结果达成良好协议，这与我们先前关于无定形硒和聚乙酸乙烯酯的结果一致。

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