Volume 40, Number 3, November I 1997
|Page(s)||281 - 286|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Brownian-vacancy–mediated disordering dynamics
Department of Physics and
Center for Stochastic
Processes in Science and Engineering,
Institute and State University - Blacksburg, VA 24061-0435, USA
Accepted: 24 September 1997
The disordering of an initially phase-segregated system of finite size, induced by the presence of highly mobile vacancies, is shown to exhibit dynamic scaling in its late stages. A set of characteristic exponents is introduced and computed analytically, in excellent agreement with Monte Carlo data. In particular, the characteristic time scale, controlling the crossover between increasing disorder and saturation, is found to depend on the exponent scaling the number of vacancies in the sample.
PACS: 64.60.Cn – Order-disorder transformations; statistical mechanics of model systems / 68.35.Ct – Interface structure and roughness / 05.20.-y – Statistical mechanics
© EDP Sciences, 1997
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