In silico study of area fraction effects on the behaviour of a ferrogranulate layer in an orthogonal applied field

Autor(en)

Oksana Bilous, Kirill A. Okrugin, Ali Lakkis, Matthias Biersack, Reinhard Richter, Sofia Kantorovich

Abstrakt

In our study, we explore ferrogranulate—a mix of glass and steel particles, specifically Stockmayer and repulsive spheres. Confined to a monolayer with three-dimensional rotation, magnetic particles respond to an external magnetic field applied orthogonal to the granulate plane. By varying the overall area fraction while maintaining a constant steel-to-glass bead ratio, we analyse cluster formation. Results show that concentration growth both slows cluster dynamics and increases the likelihood of larger clusters, hindering the response to the magnetic field. At low applied field values, our calculations suggest a bistable region at high concentrations, where droplet precursors form due to dipolar and steric interactions.

Organisation(en)

Forschungsplattform MMM Mathematics-Magnetism-Materials, Computergestützte Physik und Physik der Weichen Materie

Externe Organisation(en)

Universität Bayreuth

Journal

Journal of Magnetism and Magnetic Materials

Band

589

Anzahl der Seiten

5

ISSN

0304-8853

DOI

https://doi.org/10.1016/j.jmmm.2023.171627

Publikationsdatum

01-2024

Peer-reviewed

Ja

ÖFOS 2012

103017 Magnetismus, 103043 Computational Physics

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Condensed Matter Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/c448e8d8-efd0-4ad1-bcc5-e57705b33781