Slow dynamics in a primitive tetrahedral network model

Details Slow dynamics in a primitive tetrahedral network model Slow dynamics in a primitive tetrahedral network model

2006-06-23

arxiv.org/abs/cond-mat/0606618v1

Physics

Condensed Matter

Soft Condensed Matter

9 pages, 10 figures

Scientific paper

10.1063/1.2393239

We report extensive Monte Carlo and event-driven molecular dynamics simulations of the fluid and liquid phase of a primitive model for silica recently introduced by Ford, Auerbach and Monson [J. Chem. Phys. 17, 8415 (2004)]. We evaluate the iso-diffusivity lines in the temperature-density plane to provide an indication of the shape of the glass transition line. Except for large densities, arrest is driven by the onset of the tetrahedral bonding pattern and the resulting dynamics is strong in the Angell's classification scheme. We compare structural and dynamic properties with corresponding results of two recently studied primitive models of network forming liquids -- a primitive model for water and a angular-constraint free model of four-coordinated particles -- to pin down the role of the geometric constraints associated to the bonding. Eventually we discuss the similarities between "glass" formation in network forming liquids and "gel" formation in colloidal dispersions of patchy particles.

Affiliated with

Also associated with

No associations

Rating

Slow dynamics in a primitive tetrahedral network model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Slow dynamics in a primitive tetrahedral network model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Slow dynamics in a primitive tetrahedral network model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-529084