Work

Energetic Analysis During the Magnetization Reversal Process of a Hollow Fe Nano-Sphere by Micromagnetic Simulations

Year: 2026

Type: article

Abstract: This work presents a detailed micromagnetic analysis of the magnetization reversal process in hollow iron nanospheres with a shell thickness of 16 nm. Using the Ubermag computational framework coupled to the OOMMF, we demonstrate that these nanospheres exhibit high coercivity and remanence, producing elongated hysteresis loops, consistently with previous experimental findings. The reversal process is governed by the nucleation and evolution of non-collinear magnetic domains and domain walls, as revealed by magnetization mapping. A comprehensive energetic evaluation indicates a dynamic competition among anisotropy, exchange, Zeeman, and demagnetizing energies, with the latter exerting a dominant influence on the final magnetic configuration. These results enhance our understanding of the magnetic behavior in hollow nanostructures and provide a theoretical foundation for their application in spintronic and biomedical systems.

Source: Magnetochemistry

DOI: 10.3390/magnetochemistry12020027

Authors: Mauricio Galvis, Fredy Mesa, César Leandro Londoño-Calderón

Institutions: Universidad de Antioquia, Fundación Universitaria Los Libertadores, Universidad Autonoma de Manizales, Universidad de Manizales

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,654

OpenAlex ID: W7130936855

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