Publications
Direct observation of atomic network migration in glass
- Author(s)
- Manuel Ross, Markus Stana, Michael Leitner, Bogdan Sepiol
- Abstract
Many physical properties of glasses are still far from being understood at the atomic level. The lack of experimental methods capable of studying glassy dynamics at this scale has impeded the development of a complete model for atomic transport processes. Here we apply the new technique of atomic-scale x-ray photon correlation spectroscopy to directly observe single atomic motion in lead silicate glass. We show that dynamics change significantly depending on the glass composition, from single jump processes between inhomogeneous regions to multiple jump processes along network paths and through voids. Up until now, such measurements were far out of reach for temperatures below the glass transition. Our findings suggest that the method and the model introduced here will also help understanding atomic diffusion in a wide range of other glass systems.
- Organisation(s)
- Dynamics of Condensed Systems
- External organisation(s)
- Technische Universität München
- Journal
- New Journal of Physics
- Volume
- 16
- No. of pages
- 10
- ISSN
- 1367-2630
- DOI
- https://doi.org/10.1088/1367-2630/16/9/093042
- Publication date
- 09-2014
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103015 Condensed matter, 103018 Materials physics, 103009 Solid state physics
- Keywords
- ASJC Scopus subject areas
- General Physics and Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/1340a5c2-b02d-4bcb-9f14-537d767f60d4