Noneqilibrium Phase Transition in Kinetic Ising Model: Absence of Tricritical behaviour in Presence of Impurities

TL;DR

This study investigates the nonequilibrium phase transition in a diluted kinetic Ising model under oscillating magnetic fields, revealing the absence of tricritical behavior due to impurities, contrasting with pure systems.

Contribution

It demonstrates that impurities suppress tricritical behavior in the nonequilibrium phase transition of the kinetic Ising model.

Findings

Tricritical behavior is absent in the diluted system.

Phase diagrams show different features compared to pure systems.

Impurities influence the nature of the phase transition.

Abstract

The nonequilibrium dynamic phase transition, in the two dimensional site diluted kinetic Ising model in presence of an oscillating magnetic field, has been studied by Monte Carlo simulation. The projections of dynamical phase surface are drawn in the planes formed by the dilution and field amplitude and the plane formed by temperature and field amplitude. The tricritical behaviour is found to be absent in this case which was observed in the pure system.