Abstract Scope |
This talk will review experimental advances made in understanding the microscopic features that control the evolution of the α-relaxation in supercooled metallic liquids in the vicinity of the glass transition. By combining state-of-the-art synchrotron techniques, x-ray photon correlation spectroscopy (XPCS) and high energy x-ray diffraction (HEXRD), we have observed that the evolution of the atomic motion, and therefore of the structural α-relaxation process, should be described not only by the kinetic fragility but also by the structural fragility of the liquid as the systemis approaching the glass transition [1,2].
[1] B. Ruta, et al, Wave-Vector Dependence of the Dynamics in Supercooled Metallic Liquids, Phys. Rev. Lett. 125 (2020) 055701.
[2] N. Neuber, et al., Disentangling structural and kinetic components of the α-relaxation in supercooled metallic liquids. Commun. Phys. 5, 316 (2022).
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