Affordable Access

Publisher Website

Self-diffusion in multi-component glass-forming systems

Physica A Statistical Mechanics and its Applications
Publication Date
DOI: 10.1016/j.physa.2009.04.002
  • Glass-Forming Systems
  • Fragile Glasses
  • Long-Time Self-Diffusion Coefficient
  • Mean-Square Displacement
  • Projection-Operator Method
  • Self-Diffusion
  • Strong Glasses
  • Supercooled Liquids


Abstract Self-diffusion in multi-component glass-forming systems including fragile and strong glasses is studied from a unified viewpoint. A simple analytic form of long-time self-diffusion coefficient D S L is proposed. The equations for the mean-square displacements recently derived for two types of systems, (S) suspensions of colloids and (M) molecular systems, from a first principle by employing the Tokuyama–Mori projection-operator method are used to define D S L in each type formally, both of which are uniquely determined by the correlation function of the fluctuating forces. Analyses of the correlation functions in two types in terms of many-body interactions thus lead in type (M) to D S L ( λ ) ≃ κ − 1 ( λ c / λ ) ( 1 − λ / λ c ) 2 , where λ is a control parameter, such as an inverse temperature and a volume fraction. Here κ is simply written in terms of the potential parameters and λ c an adjustable parameter to be determined. The predictions for λ dependence of D S L in multi-component glass-forming systems are in excellent agreement with available experimental data and simulation results in equilibrium states.

There are no comments yet on this publication. Be the first to share your thoughts.


Seen <100 times

More articles like this

Nearly free electron model to glass-forming abilit...

on Journal of Non-Crystalline Sol... Feb 01, 2013

A statistical-mechanical theory of self-diffusion...

on Physica A Statistical Mechanic... Jan 01, 2008

Universality in self-diffusion of atoms among dist...

on The journal of physical chemis... Dec 08, 2011
More articles like this..