Vortex manipulation and chirality control in asymmetric bilayer nanomagnets

Vortex manipulation and chirality control in asymmetric bilayer nanomagnets

This paper presents a method of controlling the chirality of magnetic vortex in a permalloy nanodisk having a cobalt nanostripe at the top. Features of magnetization reversal of the disk + stripe nanostructure are investigated using the magneto-optical Kerr effect magnetometer and magnetic force mic...

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Veröffentlicht in:Journal of applied physics 2015-05, Vol.117 (17)
Hauptverfasser: Stebliy, Maxim E., Ognev, Alexey V., Samardak, Alexander S., Kolesnikov, Alexander G., Chebotkevich, Ludmila A., Han, Xiufeng
Format: Artikel
Sprache:eng
Schlagworte:
Bilayers
Chirality
Ferrous alloys
Kerr magnetooptical effect
Magnetic alloys
Magnetic fields
Magnetization reversal
Nucleation
Vortices
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Zusammenfassung:This paper presents a method of controlling the chirality of magnetic vortex in a permalloy nanodisk having a cobalt nanostripe at the top. Features of magnetization reversal of the disk + stripe nanostructure are investigated using the magneto-optical Kerr effect magnetometer and magnetic force microscope. Micromagnetic simulations reveal peculiarities in the vortex nucleation process and in trajectory of the vortex core under the impact of external magnetic fields.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4914879