Regensburg 2025 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 15: Poster I

MA 15.45: Poster

Dienstag, 18. März 2025, 10:00–12:30, P1

Magnetization Reconstruction from Magnetic Field Measurements Using Physics-Informed Inverse Problems — •Alexander Setescak, Florian Bruckner, and Claas Abert — University of Vienna, Austria

Understanding the magnetization of topological spin textures is crucial for advancing spintronic applications. This work covers a physics-informed framework for reconstructing magnetization from high-resolution magnetic field measurements, such as those obtained via nitrogen-vacancy (NV) magnetometry. The approach leverages the micromagnetic equilibrium condition as a critical constraint in the inverse problem, ensuring the reconstructed magnetization satisfies the fundamental energy minimization principles.

The reconstruction process is formulated as an optimization problem, where a loss functional is designed to minimize discrepancies between measured and computed magnetic fields while imposing physical and regularization constraints. Efficient gradient computation is achieved through a combination of backpropagation algorithms and the adjoint method, enabling accurate and robust parameter optimization.

Preliminary results reveal detailed magnetization structures consistent with theoretical predictions and experimental observations. This demonstrates the potential of the proposed framework to investigate tailored magnetic configurations on the nanoscale, thereby laying the groundwork for future advancements in spintronic device engineering.

Keywords: Magnetization reconstruction; Inverse problems; Micromagnetics; Computational physics