Atomic-scale relaxation dynamics and aging in a metallic glass probed by X-ray photon correlation spectroscopy

B. Ruta, Y. Chushkin, G. Monaco, L. Cipelletti, E. Pineda, P. Bruna, V. M. Giordano, M. Gonzalez-Silveira

Research output: Contribution to journalArticleResearchpeer-review

128 Citations (Scopus)

Abstract

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. Furthermore, using different cooling rates, we observe a complex hierarchy of dynamic processes characterized by distinct aging regimes. Strong analogies with the aging dynamics of soft glassy materials, such as gels and concentrated colloidal suspensions, point at stress relaxation as a universal mechanism driving the relaxation dynamics of out-of-equilibrium systems. © 2012 American Physical Society.
Original languageEnglish
Article number165701
JournalPhysical Review Letters
Volume109
DOIs
Publication statusPublished - 17 Oct 2012

Fingerprint Dive into the research topics of 'Atomic-scale relaxation dynamics and aging in a metallic glass probed by X-ray photon correlation spectroscopy'. Together they form a unique fingerprint.

  • Cite this

    Ruta, B., Chushkin, Y., Monaco, G., Cipelletti, L., Pineda, E., Bruna, P., Giordano, V. M., & Gonzalez-Silveira, M. (2012). Atomic-scale relaxation dynamics and aging in a metallic glass probed by X-ray photon correlation spectroscopy. Physical Review Letters, 109, [165701]. https://doi.org/10.1103/PhysRevLett.109.165701