Regensburg 2025 – scientific programme
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MA: Fachverband Magnetismus
MA 17: Micro- and Nanostructured Magnetic Materials
MA 17.2: Talk
Tuesday, March 18, 2025, 14:15–14:30, H18
Magnetic Characterization of Antidot Arrays in NiFe Thin Films: Insights from Ferromagnetic Resonance and Micromagnetic Simulations — •Zeynep Reyhan Ozturk1 and Fikret Yildiz2 — 1SESAME, Amman, Jordan — 2Gebze Technical University, Kocaeli, Türkiye
Antidot arrays, patterned magnetic films with regular nonmagnetic holes, are gaining attention for their unique behaviors and applications in data storage and sensors [1]. These arrays modify magnetic properties by introducing stray field energy, enabling control over magnetic anisotropy and magnetization reversal [2].
Optimizing antidot size, spacing, and lattice symmetry allows precise control of switching fields, magnetoresistance, and spin-wave modes, making them ideal for advanced technologies [3]. Their dynamic behavior, particularly localized spin-wave modes, sets them apart from continuous films.
This study combines ferromagnetic resonance (FMR) and micromagnetic simulations to reveal the influence of antidot geometry on magnetic performance. Insights gained optimize thin-film properties for next-generation devices.
References:
1.Kwon et al., Phys. Rev. B, 2013.
2.Duine et al., Phys. Rev. B, 2007.
3.Park et al., J. Appl. Phys., 2015.
Keywords: Magnetic anisotropy; Ferromagnetism; Thin films; Magnetization Dynamics; Spin waves