The Network Dynamics of Ge-Se Glasses and the Intermediate Phase


The objective of this proposal is to characterise the network dynamics for a range of GexSe1-x glasses (0 < x < 1) by using inelastic neutron spectroscopy to measure the vibrational density of states (VDOS). GexSe1-x is chosen because it is a prototypical covalently bonded network glass forming system in which a variety of structural motifs occur such that the liquid can self-organise on glass formation to give the so-called intermediate phase. Glasses within this phase, which covers the range 0.20 < x < 0.26, are stress free and stable in that their properties do not appear to age. The results will be used in conjunction with neutron diffraction and first-principles molecular dynamics simulations to build accurate atomistic models of the network glasses and to help elucidate the origin of the intermediate phase.

Metadata Access
Creator Professor Phil Salmon; Dr Anita Zeidler; Mr Dean Whittaker; Mr Keiron Pizzey; Mr Kamil Wezka
Publisher ISIS Neutron and Muon Source
Publication Year 2014
Rights CC-BY Attribution 4.0 International;
OpenAccess true
Contact isisdata(at)
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2011-10-04T16:33:29Z
Temporal Coverage End 2011-10-13T08:41:28Z