Resonance behavior of embedded and freestanding microscale ferromagnets

The ferromagnetic resonance of a disordered A2 Fe 60 Al 40 ferromagnetic stripe, of dimensions 5 µm × 1 µm × 32 nm, has been observed in two vastly differing surroundings: in the first case, the ferromagnetic region was surrounded by ordered B2 Fe 60 Al 40 , and in the second case it was free standi...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Scientific reports 2022-08, Vol.12 (1), p.14809-14809, Article 14809
Hauptverfasser: Cansever, Hamza, Anwar, Md. Shadab, Stienen, Sven, Lenz, Kilian, Narkowicz, Ryszard, Hlawacek, Gregor, Potzger, Kay, Hellwig, Olav, Fassbender, Jürgen, Lindner, Jürgen, Bali, Rantej
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The ferromagnetic resonance of a disordered A2 Fe 60 Al 40 ferromagnetic stripe, of dimensions 5 µm × 1 µm × 32 nm, has been observed in two vastly differing surroundings: in the first case, the ferromagnetic region was surrounded by ordered B2 Fe 60 Al 40 , and in the second case it was free standing, adhering only to the oxide substrate. The embedded ferromagnet possesses a periodic magnetic domain structure, which transforms to a single domain structure in the freestanding case. The two cases differ in their dynamic response, for instance, the resonance field for the uniform ( k  = 0) mode at ~ 14 GHz excitation displays a shift from 209 to 194 mT, respectively for the embedded and freestanding cases, with the external magnetic field applied along the long axis. The resonant behavior of a microscopic ferromagnet can thus be finely tailored via control of its near-interfacial surrounding.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-022-15959-0