Vinamax: a macrospin simulation tool for magnetic nanoparticles

TL;DR

Vinamax is a simulation tool that models the magnetization dynamics of magnetic nanoparticles over large timescales, incorporating temperature effects and external fields for biomedical research applications.

Contribution

It introduces a macrospin-based simulation approach using the Landau-Lifshitz equation with stochastic temperature modeling, tailored for large-scale nanoparticle studies.

Findings

Efficient simulation of nanoparticle magnetization dynamics.

Inclusion of temperature effects via stochastic methods.

Application potential in biomedical imaging research.

Abstract

We present Vinamax, a simulation tool for nanoparticles that aims at simulating magnetization dynamics on very large timescales. To this end, each in dividual nanoparticle is approximated by a macrospin. Vinamax numerically solves the Landau-Lifshitz equation by adopting a dipole approximation method, while temperature effects can be taken into account with two stochastic methods. It describes the influence of demagnetizing and anisotropy fields on magnetic nanoparticles at finite temperatures in a space and time-dependent externally applied field. Vinamax can be used in biomedical research where nanoparticle imaging techniques are under developement.