Nucleation in Ising ferromagnet by a field spatially spreading in time

Details Nucleation in Ising ferromagnet by a field spatially spreading in time Nucleation in Ising ferromagnet by a field spatially spreading in time

2012-04-11

arxiv.org/abs/1204.2367v1

Physics

Condensed Matter

Statistical Mechanics

15 pages Latex, 7 figures

Scientific paper

The nucleation in Ising ferromagnet has been studied by Monte Carlo simulation. Here, the magnetic field is spreading over the space in time. The nucleation time is observed to increase as compared to that in the case of static field. The clusters of negative spins is observed to grow from the center. The growth of effective magnetisation is studied with temperature and the strength of spreading magnetic field. The ratio of nucleation time and effective time is also studied with strength of spreading magnetic field. The effective time would introduce itself as a new scale of time in the case of nucleation by spatially spreading magnetic field. The effective time and the nucleation time both are observed to decrease as a power law fashion with the rate factor of spreading magnetic field.

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