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5 p, 1.6 MB Atomic-scale relaxation dynamics and aging in a metallic glass probed by x-ray photon correlation spectroscopy / Ruta, B. (European Synchrotron Radiation Facility) ; Chushkin, Y. (European Synchrotron Radiation Facility) ; Monaco, Giulio (European Synchrotron Radiation Facility) ; Cipelletti, L. (Laboratoire Charles Coulomb (Montpellier, França)) ; Pineda Soler, Eloi (Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear) ; Bruna Escuer, Pere (Universitat Politècnica de Catalunya. Departament de Física Aplicada) ; Giordano, V. M. (Université Claude Bernard Lyon 1) ; González Silveira, Marta (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
We use x-ray photon correlation spectroscopy to investigate the structural relaxation process in a metallic glass on the atomic length scale. We report evidence for a dynamical crossover between the supercooled liquid phase and the metastable glassy state, suggesting different origins of the relaxation process across the transition. [...]
2012 - 10.1103/PhysRevLett.109.165701
Physical review letters, Vol. 109, Issue 16 (October 2012) , p. 165701  

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