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Vortex dynamics in Permalloy disks with artificial defects: Suppression of the gyrotropic mode
Kuepper, K., Bischoff, L., Akhmadaliev, Ch., Fassbender, J.
, Stoll, H., Chou, K. W., Puzic, A., Fauth, K. , Dolgos, D., Schuetz, G., Van Waeyenberge, B., Tyliszczak, T., Neudecker, I., Woltersdorf, Georg and Back, Christian H.
(2007)
Vortex dynamics in Permalloy disks with artificial defects: Suppression of the gyrotropic mode.
Applied Physics Letters 90 (6), 062506.
Date of publication of this fulltext: 26 May 2010 12:10
Article
DOI to cite this document: 10.5283/epub.14933
Abstract
The dynamics of magnetic vortices in thin Permalloy disks having artificial defects in the form of small holes at different locations within the disk has been investigated by means of frequency-domain spatially resolved ferromagnetic resonance. It is found that the vortex can be effectively captured by such a defect. Consequently the commonly observed gyrotropic vortex motion in an applied ...
The dynamics of magnetic vortices in thin Permalloy disks having artificial defects in the form of small holes at different locations within the disk has been investigated by means of frequency-domain spatially resolved ferromagnetic resonance. It is found that the vortex can be effectively captured by such a defect. Consequently the commonly observed gyrotropic vortex motion in an applied microwave field of 1 mT is suppressed. However, if in addition a static magnetic field of at least 4.3 mT is applied, the vortex core is nucleated from the artificial defect and a modified gyrotropic motion starts again. (c) 2007 American Institute of Physics.
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Details
| Item type | Article | ||||
| Journal or Publication Title | Applied Physics Letters | ||||
| Publisher: | AMER INST PHYSICS | ||||
|---|---|---|---|---|---|
| Place of Publication: | MELVILLE | ||||
| Volume: | 90 | ||||
| Number of Issue or Book Chapter: | 6 | ||||
| Page Range: | 062506 | ||||
| Date | February 2007 | ||||
| Institutions | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Chair Professor Back > Group Christian Back | ||||
| Identification Number |
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| Keywords | MAGNETIZATION DYNAMICS; REVERSAL; FIELD; | ||||
| Dewey Decimal Classification | 500 Science > 530 Physics | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-149334 | ||||
| Item ID | 14933 |
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