Silva, T.
, Shaw, J.
, Nembach, H.
, Weiler, M.
and Schoen, M.
(2015),
Radiative damping in wave guide based FMR measured via analysis of perpendicular standing spin waves in sputtered Permalloy films, Journal of Applied Physics, [online], https://doi.org/10.1103/PhysRevB.92.184417
(Accessed November 24, 2024)
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Radiative damping in wave guide based FMR measured via analysis of perpendicular standing spin waves in sputtered Permalloy films
Published
Author(s)
, , , Mathias Weiler, Martin Schoen
Abstract
The damping α of the spinwave resonances in 75 nm, 120 nm, and 200 nm -thick Permalloy films is measured via vector-network- analyzer ferromagnetic-resonance (VNA-FMR). Inductive coupling between the sample and the waveguide leads to an additional radiative damping term. The radiative contribution to the over-all damping is determined by measuring perpendicular standing spin waves (PSSWs) in the Permalloy films, and the results are compared to a simple analytical model. The damping of the PSSWs can be fully explained by three contributions to the damping: The intrinsic damping, the eddy-current damping, and the radiative damping. No other contributions were observed. Furthermore, a method to determine the radiative damping in FMR measurements with a single resonance is suggested.Citation
Journal of Applied Physics
Volume
92
Pub Type
Journals
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Created November 17, 2015, Updated November 10, 2018