Dr
Zach Evenson
(Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt, Köln)
15/09/2015, 09:10
DyProSo2015 Main track
Talk
We report on the atomic dynamics in a glass-forming Au81Si19 liquid using quasielastic neutron scattering. At low q-values and high temperatures the self-diffusion of gold is well approximated in the hydrodynamic approach with a simple exponential describing the final decay of the self-correlation function. With increasing q, we observe a systematic stretching of the correlation functions,...
Prof.
Zbigniew Lodziana
(Department of structural Research, Instutute of Nuclear Physics)
15/09/2015, 08:30
DyProSo2015 Main track
Invited Talk
Metal borohydrides (M-BH4) have focused research attention due to large hydrogen content. Extensive basic research efforts were directed toward understanding their dynamical and thermodynamic properties. Unfortunately, till now none of such compounds meets practical requirements for reversible hydrogen storage. The unexpected side effect of such research was discovery of the high ion mobility...
Mr
Markus Stana
(Universität Wien, Faculty of Physics, Dynamics of Condensed Systems)
15/09/2015, 09:35
DyProSo2015 Main track
Talk
While diffusion is well understood for pure metals and for solid solutions, diffusion mechanisms in ordered intermetallic alloys are still under debate. Even for the simple case of B2 alloys, very little is known. As nearest-neighbour jumps would destroy the long-range order, effective jumps to further neighbouring shells have to be considered. Such jumps can either take place directly, where...
Dr
Peter Fouquet
(Institut Laue-Langevin)
15/09/2015, 10:00
DyProSo2015 Main track
Talk
The study of friction and diffusion processes on molecular length scales requires experimental methods that deliver sub-nanometer spatial resolution at nanosecond time resolution. After decades of research in friction the range of available spectrometers with these characteristics is still too limited. Although, neutron scattering is not a widely used for surfaces, neutron spectroscopy is able...