Differential scanning calorimetry was used to study thermokinetic behavior of (As₂Se₃)_100−x(As₂Te₃)_x infrared glasses (seven compositions along the pseudo‐binary were investigated). Glass‐transition kinetics was described in terms of the Tool‐Narayanaswamy‐Moynihan model and the relaxation motions were interpreted using Raman spectroscopy data. The enthalpy relaxation kinetics was found to be absolutely uninfluenced by changing Se/Te ratio. On the other hand, DSC crystallization behavior changed significantly with increasing As₂Te₃ content: Te‐rich compositions show marked affinity toward crystallization, whereas in case of the compositions with 0‐34 mol.% As₂Te₃ crystal growth is significantly suppressed. X‐ray diffraction analysis indicated presence of monoclinic As₂Se₃, As₂Te₃, and As₂Se(Te)₃ phases. The complex crystallization behavior occurring in case of the Te‐rich compositions was described by superposition of two autocatalytic kinetic signals. Based on the information from infrared microscopy the two overlapping crystallization processes can be attributed to the respective formations of spherulitic and needle‐shaped crystallites. Best glass stability was identified in case of the (As₂Se₃)₆₆(As₂Te₃)₃₄ composition, which appears to be a potential candidate for optic applications in the far‐infrared region of the spectrum.

中文翻译：

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（As2Se3）100-x-（As2Te3）x红外光学玻璃的热结构表征

差示扫描量热法用于研究（As ₂ Se ₃）_{100- x}（As ₂ Te ₃）_x红外玻璃的热动力学行为（研究了沿着伪二进制的七个组成）。玻璃化转变动力学用Tool-Narayanaswamy-Moynihan模型描述，弛豫运动用拉曼光谱数据解释。发现改变Se / Te比绝对不影响焓松弛动力学。另一方面，随着As ₂ Te _3的增加，DSC结晶行为发生了显着变化。含量：富含Te的组合物对结晶具有显着的亲和力，而当组合物具有0-34 mol。％As _2时， Te _3的晶体生长被显着抑制。X射线衍射分析表明存在单斜晶As ₂ Se ₃，As ₂ Te ₃和As ₂ Se（Te）₃阶段。富Te组成情况下发生的复杂结晶行为是通过两个自催化动力学信号的叠加来描述的。根据红外显微镜的信息，这两个重叠的结晶过程可归因于球状和针状微晶的各自形成。在（As ₂ Se ₃）₆₆（As ₂ Te ₃）₃₄组成的情况下，可以确定最佳的玻璃稳定性，这似乎是光谱的远红外区域中光学应用的潜在候选者。