Magnetisation reversal in Ising Ferromagnet by Thermal and Field gradients

TL;DR

This paper investigates how thermal and magnetic field gradients influence magnetisation reversal in Ising ferromagnets using Monte Carlo simulations, focusing on domain wall dynamics and reversal times.

Contribution

It introduces a detailed analysis of reversal mechanisms under thermal and field gradients, including the effects of domain wall roughness and a marginal competition line.

Findings

Reversal times vary with thermal and field gradients.

Domain wall roughness increases with gradients.

A marginal competition line between thermal and field effects was identified.

Abstract

We report the results of the magnetisation reversal in Ising ferromagnet having thermal and field gradients by Monte Carlo simulation. We have studied the distribution of reversal times for different values of thermal and field gradients and compared the results with those obtained for uniform temperature. The movement of the domain wall of distinct domains and the growth of roughness of domain wall have also been studied statistically. The role of competing thermal and field gradients, in the reversal mechanism, was also studied and a line of marginal competition was obtained.