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1 PublikationInfluence of oxidic and metallic interfaces on the magnetic damping of Permalloy thin films
Ney, V.; Salikhov, R.; Lenz, K.; Hellwig, O.; Lindner, J.; Ney, A.
Abstract
Magnetic damping within Permalloy (Py) thin films is studied via temperature- and frequencydependent ferromagnetic resonance (FMR) experiments. While the Py thickness is kept constant at 20 nm, the environment at the film interfaces was systematically varied by fabricating a set of Py thin films grown on widely used substrates and capped with common layers, which are assumed to be suitable to prevent oxidation. The resulting frequency- and temperature-dependence of the FMR linewidth significantly deviates from the expected Gilbert-like behavior and especially for oxidic interfaces unwanted non-Gilbert-like contributions to the magnetic damping appear, in particular at low temperatures. It turns out that Py sandwiched in-between metallic capping and buffer layers
of Al exhibits the smallest magnetic damping of purely Gilbert-like nature.
Keywords: Thin films; ferromagnetism; ferromagnetic resonance; anisotropy; linewidth
Verknüpfte Publikationen
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Data publication: Influence of oxidic and metallic interfaces on the magnetic …
ROBIS: 37643 HZDR-primary research data are used by this (Id 37626) publication
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Physical Review Materials 7(2023), 124403
DOI: 10.1103/PhysRevMaterials.7.124403
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Permalink: https://www.hzdr.de/publications/Publ-37626