Kinetics of domain growth: the relevance of two-step quenches

Dasgupta, Chandan ; Pandit, Rahul (1986) Kinetics of domain growth: the relevance of two-step quenches Physical Review B, 33 (7). pp. 4752-4757. ISSN 0163-1829

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Domain growth in the wake of a rapid quench from high to low temperatures is studied via Monte Carlo simulations of a ten-state Potts model on a triangular lattice. Quenches in which the temperature is lowered in one step and in two steps are studied. The exponent which characterizes the late-stage growth of domains is found to have different values for one-step and two-step quenches, if standard methods are used to obtain this exponent numerically. However, this difference becomes insignificant if the origin of time for two-step quenches is shifted relative to the origin for one-step quenches to compensate for the larger initial domain sizes in the two-step case. The interpretation of recent experiments on two-step quenches is shown to suffer from a similar ambiguity.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:22850
Deposited On:25 Nov 2010 13:57
Last Modified:17 May 2016 06:48

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