Characterization of kinetic coarsening in a random-field Ising model.
We report a study of nonequilibrium relaxation in a two-dimensional random field Ising model at a nonzero temperature. We attempt to observe the coarsening from a different perspective with a particular focus on three dynamical quantities that characterize the kinetic coarsening. We provide a simple generalized scaling relation of coarsening supported by numerical results. The excellent data collapse of the dynamical quantities justifies our proposition. The scaling relation corroborates the recent observation that the average linear domain size satisfies different scaling behavior in different time regimes.
Department of Physics, Scottish Church College, 1 & 3 Urquhart Square Kolkata 700 006, India.
Pradipta Kumar
PK
Mandal
Department of Physics, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata 700 009, India.
Suman
S
Sinha