Curcic, Michael and Stoll, Hermann and Weigand, Markus and Sackmann, Vitalij and Juellig, Patrick and Kammerer, Matthias and Noske, Matthias and Sproll, Markus and Van Waeyenberge, Bartel and Vansteenkiste, Arne and Woltersdorf, Georg and Tyliszczak, Tolek and Schuetz, Gisela (2011) Magnetic vortex core reversal by rotating magnetic fields generated on micrometer length scales. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 248 (10). pp. 2317-2322. ISSN 0370-1972,
Full text not available from this repository. (Request a copy)Abstract
Unidirectional switching of the magnetic vortex core can be achieved in micron-sized ferromagnetic platelets by excitation of the gyrotropic mode of the vortex structure with in-plane rotating magnetic fields. Circulating fields with a switchable sense of rotation (clockwise, CW or counter clockwise, CCW) have been generated on a micrometer length scale at frequencies up to 1 GHz by two orthogonal electric RF currents with 908 phase shift flowing through crossed but not isolated striplines. Decoupling of these currents is realized by balanced symmetric RF sources. The amplitudes of the rotating magnetic fields and their spatial distributions are calculated and the stripline geometry is discussed. By taking advantage of this technique, unidirectional vortex core reversal by excitation with CW or CCW rotating magnetic fields has been observed by time resolved scanning transmission X-ray microscopy. An area with reversed magnetization, the "dip," was observed near the vortex core before vortex core reversal. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EXCITATION; PERMALLOY; DYNAMICS; MOTION; DOTS; rotating magnetic fields; vortex core reversal; vortex dynamics |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 May 2020 09:48 |
| Last Modified: | 28 May 2020 09:48 |
| URI: | https://pred.uni-regensburg.de/id/eprint/20048 |
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