Magnetostatic spin waves and magnetic-wave chaos in ferromagnetic films. II. Numerical simulations of non-linear waves

TL;DR

This paper presents numerical simulations of magnetostatic spin waves in ferromagnetic films, exploring how edges, defects, and non-linear effects influence wave patterns, soliton formation, and chaotic ferromagnetic resonance.

Contribution

It introduces a numerical simulation method for non-linear magnetostatic waves and analyzes the effects of film edges and defects on wave dynamics and chaos.

Findings

Edges and defects significantly affect wave pattern formation.

Non-linear effects lead to soliton excitation and evolution.

Chaotic ferromagnetic resonance can be observed in simulations.

Abstract

A method and some results of numeric simulations of magnetostatic spin waves in ferromagnetic films are exponded, in comparison with the theory earlier presented in arXiv preprint 1204.0200. In particular, roles of films finiteness (edges) and defects in formation of linear and non-linear magnetostatic wave patterns, excitation and evolution of two-dimensional solitons, and chaotic non-linear ferromagnetic resonance are considered.