6533b834fe1ef96bd129df7f
RESEARCH PRODUCT
Scaling and mean-field-like behaviour in phase separation processes
Dieter W. Heermannsubject
PhysicsNonlinear systemMean field theoryMetastabilityMonte Carlo methodBinary numberGeneral Materials ScienceBinary systemStatistical physicsCondensed Matter PhysicsStructure factorScalingElectronic Optical and Magnetic Materialsdescription
Extensive Monte Carlo calculations are used to study the still not well understood process of phase separation in binary systems. The results show that for a separation dominated by long-wavelength fluctuations a mean-field description holds in certain concentration regions. This, however, is only true for short times after the system has been brought into a non-equilibrium state. A crucial parameter is the interaction range. It determines the region and the time where the mean field description is valid. At later times the structure factor exhibits dynamical scaling. Scaling is also investigated for the metastable states. The results are applicable to polymer blends with long chains or binary alloys with long-range forces.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1985-09-01 | Zeitschrift f�r Physik B Condensed Matter |