Observation of Scaling Behaviour of Dynamic Correlations near Liquid-Glass Transition

摘要: A time-of-flight inelastic neutron scattering study of Ca0.4K0.6(NO3)1.4 the temperature dependence dynamic structure factor revealed a clear frequency-independent signature glass transition at conventional Tg. Above Tg data combined with our previous spin echo results display two relaxation processes well-separated frequencies. The faster process was now found to be consistent scaling behaviour corresponding critical-type slowing-down when approaching certain T0, as predicted by recent mode coupling theories. variation various properties consistently points critical T0 about 30 K above Tg = 333 K.