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Resonance behavior of embedded and freestanding microscale ferromagnets.

ABSTRACT: The ferromagnetic resonance of a disordered A2 Fe₆₀Al₄₀ 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 Fe₆₀Al₄₀, 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.

SUBMITTER: Cansever H

PROVIDER: S-EPMC9433406 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature

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Resonance behavior of embedded and freestanding microscale ferromagnets.

Cansever Hamza H Anwar Md Shadab MS Stienen Sven S Lenz Kilian K Narkowicz Ryszard R Hlawacek Gregor G Potzger Kay K Hellwig Olav O Fassbender Jürgen J Lindner Jürgen J Bali Rantej R

Scientific reports 20220831 1

The ferromagnetic resonance of a disordered A2 Fe60Al40 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 Fe60Al40, 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 ...[more]

PMID: 36045141

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Dataset Information

Resonance behavior of embedded and freestanding microscale ferromagnets.

Publications

Resonance behavior of embedded and freestanding microscale ferromagnets.

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