Abstract

Ferromagnetic resonance (FMR) measurements have been performed over a broad frequency range on epitaxial films of Co and bcc α‐Fe grown onto epilayers of ZnSe by molecular‐beam‐epitaxy techniques on (001) and (110) GaAs substrates. In‐plane and perpendicular FMR results were used in deducing the magnetic parameters and spin‐wave resonance (SWR) dispersion of the films. The magnetic parameters deduced for Fe films agree with previous results obtained on the (001) Fe/ZnSe film. Well‐resolved SWR modes were observed in the Fe/ZnSe films, allowing extraction of the exchange stiffness constant. Few spin‐wave excitations were observed for the Co/ZnSe films. Both (110) Fe/ZnSe and (110) Co/ZnSe show evidence for surface spin‐wave excitations. These excitations are attributed to variations in the internal field near the interface.

Notes

Originally published in Journal of Applied Physics v.65 no.7 (1989), pp.2799-2802. DOI:10.1063/1.342773

Keywords

FMR, epitaxial films, Fe/ZnSe, Co/ZnSe, GaAs substrates, spin wave resonance, SWR

Subject Categories

Ferromagnetic resonance, Molecular beam epitaxy

Disciplines

Electromagnetics and photonics

Publisher

American Institute of Physics

Publication Date

4-1989

Rights Information

© 1989 American Institute of Physics

Rights Holder

American Institute of Physics

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