Dynamic phase transition properties for the mixed spin-(1/2, 1) Ising model in an oscillating magnetic field

TL;DR

This study explores the dynamic phase transitions of a mixed spin-(1/2, 1) Ising model under oscillating magnetic fields, revealing complex phase diagrams with reentrant behavior and critical points using effective-field theory.

Contribution

It introduces a detailed analysis of the dynamic phase diagrams for the mixed spin-(1/2, 1) Ising model under time-dependent magnetic fields, highlighting reentrant phenomena and critical behaviors.

Findings

Phase diagrams show dynamic tricritical points.

Reentrant behavior observed at high frequencies.

Disappearance of mixed phase at low frequencies.

Abstract

We study the dynamic phase transition properties for the mixed spin-(1/2, 1) Ising model on a square lattice under a time-dependent magnetic field by means the effective-field theory (EFT) based on the Glauber dynamics. We present the dynamic phase diagrams in the reduced magnetic field amplitude and reduced temperature plane and find that the phase diagrams exhibit the dynamic tricitical behavior, the multicritical and zero-temperature critical points as well as reentrant behavior. We also investigate the influence of the frequency (w) and observe that for small values of w the mixed phase disappears, but high values it appears and the system displays reentrant behavior as well as critical end point.