High propagating velocity of spin waves and temperature dependent damping in a CoFeB thin film
- 25 June 2012
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 100 (26), 262412
- https://doi.org/10.1063/1.4731273
Abstract
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 permalloyfilm. Analyzing the resonancelinewidth, we obtain an intrinsic Gilbert damping parameter of about 0.007 at room temperature. It increases to 0.023 at 5 K. CoFeB is a promising material for magnonic devices supporting fast propagating spin waves.This publication has 31 references indexed in Scilit:
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