Computational micromagnetics with Commics

TL;DR

Commics is an open-source Python module that enables detailed micromagnetic simulations of ferromagnetic materials using advanced finite element methods, making complex magnetization dynamics accessible and customizable.

Contribution

It introduces a Python-based, open-source implementation of state-of-the-art finite element methods for micromagnetic simulations, integrated with Netgen/NGSolve.

Findings

Implementation of unconditionally convergent finite element methods

Accessible Python interface for micromagnetic simulations

Open-source availability with documentation and examples

Abstract

We present our open-source Python module Commics for the study of the magnetization dynamics in ferromagnetic materials via micromagnetic simulations. It implements state-of-the-art unconditionally convergent finite element methods for the numerical integration of the Landau-Lifshitz-Gilbert equation. The implementation is based on the multiphysics finite element software Netgen/NGSolve. The simulation scripts are written in Python, which leads to very readable code and direct access to extensive post-processing. Together with documentation and example scripts, the code is freely available on GitLab.