Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 26, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4731273
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Funding
- German Excellence Cluster Nanosystems Initiative Munich (NIM)
- European Community [228673]
- DFG [GR1640/5-1]
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Spin wave propagation in a magnetron-sputtered CoFeB thin film is investigated. We apply both in-plane and out-of-plane magnetic fields. At room temperature, we find velocities of up to 25 and 3.5 km/s, respectively. These values are much larger compared to a thin permalloy film. Analyzing the resonance linewidth, we obtain an intrinsic Gilbert damping parameter of about 0.007 at room temperature. It increases to 0.023 at 5K. CoFeB is a promising material for magnonic devices supporting fast propagating spin waves. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4731273]
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