Deutsche Tagung f ¨ur Forschung mit ... - SNI-Portal

Struktur und Dynamik Poster: Mi., 14:00–16:30 M-P127
The amorphous state seen in synchrotron light
Hermann Franz 1 , Andreas Schoeps 1 , Karel Saksl 1 , Gerd Wellenreuther 1 ,
Ying Wang 2 , Jianzhong Jiang 2 , Uwe van Bürck 3 , Ilya Sergueev 4
1 Deutsches Elektronen Synchrotron DESY, Notkestr. 85 22607 Hamburg – 2 Zhejinag
University, Hangzhou, P.R. China – 3 Technical University Munich, Garching, Germany
– 4 European Synchrotron Radiation Facility, ESRF, Grenoble, Cedex, France
The transition from the liquid to the amorphous state is still a matter of controversial
debate. Many different experimental methods and numerical simulations have been
applied to shine light onto this problem. We used synchrotron radiation to study
both structure and dynamics of amorphous systems in particular in the vicinity of the
glass-liquid-transition.
The contribution will discuss the results of our investigation on model systems ranging
from amorphous metals to simple organic glass-formers. We investigated the structure
of amorphous systems using a combination of techniques including reverse Monte-
Carlo methods, slow relaxations near the calorimetric glass transition by fast diffraction
experiments and fast dynamics near the mode-coupling glass transition temperature
by nuclear resonant scattering techniques. Also effects of extreme conditions like high
pressure and geometrical confinement will be discussed. Moreover new ideas on the
conditions for glass formation in metallic systems will be presented.