Magnetization switching in nanoscale ferromagnetic grains: simulations with heterogeneous nucleation

TL;DR

This paper investigates magnetization switching in nanoscale ferromagnetic grains using kinetic Ising model simulations, focusing on heterogeneous nucleation effects, boundary influences, and disorder types.

Contribution

It introduces a detailed simulation study comparing boundary effects and disorder types on magnetization switching in nanoscale ferromagnetic particles.

Findings

Boundary presence affects nucleation and switching behavior.

Different disorder types influence switching dynamics.

Comparison between boundary and periodic systems reveals key differences.

Abstract

We present results obtained with various types of heterogeneous nucleation in a kinetic Ising model of magnetization switching in single-domain ferromagnetic nanoparticles. We investigate the effect of the presence of the system boundary and make comparison with simulations on periodic lattices. We also study systems with bulk disorder and compare how two different types of disorder influence the switching behavior.