Dynamic phase transitions in a ferromagnetic thin film system: A Monte Carlo simulation study

TL;DR

This study uses kinetic Monte Carlo simulations to explore dynamic phase transitions in ferromagnetic thin films under bias and time-dependent magnetic fields, revealing the role of bias as a conjugate field and aligning with experimental observations.

Contribution

It provides a detailed simulation-based analysis of dynamic phase transitions in ferromagnetic thin films, highlighting the influence of bias fields and reproducing experimental results.

Findings

Bias field acts as a conjugate to the dynamic order parameter.

Phase line between antiparallel dynamic states depends on system parameters.

Simulation results qualitatively match experimental findings.

Abstract

Dynamic phase transition properties of ferromagnetic thin film system under the influence both bias and time dependent magnetic fields have been elucidated by means of kinetic Monte Carlo simulation with local spin update Metropolis algorithm. The obtained results after a detailed analysis suggest that bias field is the conjugate field to dynamic order parameter, and it also appears to define a phase line between two antiparallel dynamic ordered states depending on the considered system parameters. Moreover, the data presented in this study well qualitatively reproduce the recently published experimental findings where time dependent magnetic behavior of a uniaxial cobalt films is studied in the neighborhood of dynamic phase transition point.