The results of synchrotron x-ray scattering studies of glass forming Ti₄₀Zr₁₀Cu₃₆Pd₁₄ and Ti₃₄Zr₁₁Cu₄₇Ni₈ (Vit101) liquids and glasses are presented. Containerless experiments on the liquids were made using electrostatic levitation, while the corresponding glasses were thermally cycled to measure and account for structural relaxation. The total structure factor and total pair-distribution functions were measured as a function of temperature for the two equilibrium and supercooled Ti-based liquids, and for the corresponding glasses from room temperature to their respective glass transition temperatures. The rate of structural ordering was determined from the rate of increase in the magnitude of the first peak in the X-ray structure factors with decreasing temperature. Structural fragility is observed in these systems, with the magnitude of the fragility factor inversely correlated with the glass forming-ability. The amplitude of the first peak in the x-ray static structure factor in both alloys displays evidence for a Curie-Weiss type behavior. A proposed order parameter distinguishing glass-forming ability, ${\left(S(T,q_1)-1\right)}^{-1}$${\left(S(T,q_1)-1\right)}^{-1}$, shows a peak in the effective Curie temperature. This peak is at a higher temperature for the better glass former, consistent with a liquid that is closer to the ideal glass structure at a higher temperature.

中文翻译：

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结构脆性和 Curie-Weiss 行为区分 Ti 基金属合金的玻璃形成能力


介绍了形成 Ti ₄₀ Zr ₁₀ Cu ₃₆ Pd ₁₄ 和 Ti ₃₄ Zr ₁₁ Cu ₄₇ Ni ₈ （Vit101） 液体和玻璃的玻璃的同步加速器 X 射线散射研究结果。使用静电悬浮对液体进行无容器实验，同时对相应的玻璃进行热循环以测量和解释结构松弛。对于两种平衡和过冷的 Ti 基液体，以及相应的玻璃从室温到各自的玻璃化转变温度，测量总结构因子和总对分布函数与温度的函数关系。结构有序速率由 X 射线结构因子中第一个峰的大小随温度降低的增加速率确定。在这些系统中观察到结构脆性，脆性因子的大小与玻璃形成能力呈负相关。两种合金中 X 射线静态结构因子中第一个峰值的振幅显示了 Curie-Weiss 类型行为的证据。区分玻璃形成能力的拟议阶参数 ${\left(S(T,q_1)-1\right)}^{-1}$ 显示了有效居里温度的峰值。该峰处于较高温度下，以获得更好的玻璃形成剂，这与在较高温度下更接近理想玻璃结构的液体一致。