Gilbert damping of CoFe-alloys
Weber R, Han DS, Boventer I, Jaiswal S, Lebrun R, Jakob G, Klaeui M (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 52
Article Number: 325001
Journal Issue: 32
DOI: 10.1088/1361-6463/ab2096
Abstract
We report structural, magnetic and dynamic properties of polycrystalline CoxFe1-x-alloy films on Sapphire, Silicon, and MgO substrates across the full composition range, by using a vector network analyser ferromagnetic resonance measurement technique (VNA-FMR), superconducting quantum interference device magnetometry (SQUID) and x-ray diffraction (XRD). In the approximate vicinity of 28% Co, we observe a minimum of the damping parameter, associated with a reduction in the density of states to a minimum value at the Fermi energy level. For films on all substrates, we find magnetic damping of the order of 4-5 • 10-3, showing that the substrate does not play a major role. Using a post-annealing process, we report a decrease of the magnetic damping down to 3-4 • 10-3. We find that the saturation magnetization depends approximately reciprocally on the damping parameter with varying alloy composition.
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How to cite
APA:
Weber, R., Han, D.-S., Boventer, I., Jaiswal, S., Lebrun, R., Jakob, G., & Klaeui, M. (2019). Gilbert damping of CoFe-alloys. Journal of Physics D: Applied Physics, 52(32). https://doi.org/10.1088/1361-6463/ab2096
MLA:
Weber, Ramon, et al. "Gilbert damping of CoFe-alloys." Journal of Physics D: Applied Physics 52.32 (2019).
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Germany (DE)