Control of magnetic vortex states in FeGa microdisks : Experiments and micromagnetics
Pradhan, Gajanan (Istituto Nazionale di Ricerca Metrologica)
Magni, Alessandro (Istituto Nazionale di Ricerca Metrologica)
Celegato, Federica (Istituto Nazionale di Ricerca Metrologica)
Coisson, Marco (Istituto Nazionale di Ricerca Metrologica)
Barrera, Gabriele (Istituto Nazionale di Ricerca Metrologica)
Mikuličková, Lenka (Thin Film Technological Service)
Arregi, Jon Ander (Brno University of Technology. Central European Institute of Technology)
Čelko, Ladislav (Brno University of Technology. Central European Institute of Technology)
Uhlíř, Vojtěch (Brno University of Technology. Central European Institute of Technology)
Rizzi, Paola (Università di Torino. Dipartimento di Chimica)
Tiberto, Paola (Istituto Nazionale di Ricerca Metrologica)

Date:	2023
Abstract:	Magnetic vortices have been an interesting element in the past decades due to their flux-closure domain structures which can be stabilized at ground states in soft ferromagnetic microstructures. In this work, vortex states are shown to be nucleated and stabilized in FeGa and FeGa disks, which can be an upcoming candidate for applications in strain-induced electric field control of magnetic states owing to the high magnetostriction of the alloy. The magnetization reversal in the disks occurs by the formation of a vortex, double vortex or S-domain state. Micromagnetic simulations have been performed using the FeGa material parameters and the simulated magnetic states are in good agreement with the experimental results. The studies performed here can be essential for the use of FeGa alloy in low-power electronics.
Grants:	European Commission 861145
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Magnetic vortex ; Magneto-optic Kerr effect ; Magnetic force microscope ; Micromagnetic simulations
Published in:	Journal of Science: Advanced Materials and Devices, Vol. 8, Issue 3 (September 2023) , art. 100608, ISSN 2468-2179

DOI: 10.1016/j.jsamd.2023.100608

8 p, 3.1 MB

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