Weindler, T. and Bauer, H. G. and Islinger, R. and Boehm, B. and Chauleau, J. -Y. and Back, C. H. (2014) Magnetic Damping: Domain Wall Dynamics versus Local Ferromagnetic Resonance. PHYSICAL REVIEW LETTERS, 113 (23): 237204. ISSN 0031-9007, 1079-7114
Full text not available from this repository. (Request a copy)Abstract
Magnetic relaxation is one of the dominating features of magnetization dynamics. Depending on the magnetic structure and the experimental approach, different magnitudes of the damping parameter are reported even for a given material. In this study, we experimentally address this issue by accessing the damping parameter in the same magnetic nanotracks using different approaches: local ferromagnetic resonance (alpha = 0.0072) and field-driven domain wall dynamics (alpha = 0.023). The experimental results cannot fully be accounted for by modeling only roughness in micromagnetic simulations. Consequently, we have included nonlocal texture induced damping to the micromagnetic code. We find excellent agreement with the observed increased damping in the vortex structures for the same input Gilbert alpha when texture-induced nonlocal damping is included.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MOTION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Aug 2019 12:13 |
| Last Modified: | 06 Aug 2019 12:13 |
| URI: | https://pred.uni-regensburg.de/id/eprint/9080 |
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