Metallic ferromagnetic films with magnetic damping under 1.4 × 10−3

Aidan J. Lee, Jack T. Brangham, Yang Cheng, Shane P. White, William T. Ruane, Bryan D. Esser, David W. McComb, P. Chris Hammel and Fengyuan Yang ()
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Aidan J. Lee: The Ohio State University
Jack T. Brangham: The Ohio State University
Yang Cheng: The Ohio State University
Shane P. White: The Ohio State University
William T. Ruane: The Ohio State University
Bryan D. Esser: The Ohio State University
David W. McComb: The Ohio State University
P. Chris Hammel: The Ohio State University
Fengyuan Yang: The Ohio State University

Nature Communications, 2017, vol. 8, issue 1, 1-6

Abstract: Abstract Low-damping magnetic materials have been widely used in microwave and spintronic applications because of their low energy loss and high sensitivity. While the Gilbert damping constant can reach 10−4 to 10−5 in some insulating ferromagnets, metallic ferromagnets generally have larger damping due to magnon scattering by conduction electrons. Meanwhile, low-damping metallic ferromagnets are desired for charge-based spintronic devices. Here, we report the growth of Co25Fe75 epitaxial films with excellent crystalline quality evident by the clear Laue oscillations and exceptionally narrow rocking curve in the X-ray diffraction scans as well as from scanning transmission electron microscopy. Remarkably, the Co25Fe75 epitaxial films exhibit a damping constant

Date: 2017
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DOI: 10.1038/s41467-017-00332-x

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