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Intrinsic oscillation of coupled domain walls in a perpendicularly magnetized nanowire system
- Source :
- Journal of Applied Physics. 119:233901
- Publication Year :
- 2016
- Publisher :
- AIP Publishing, 2016.
-
Abstract
- The dynamics of two domain walls (DWs) in a system of two nanowires with perpendicular magnetocrystalline anisotropy (PMA) was investigated by micromagnetic simulation. It was found that without applied current, the motion mode of DWs is translational motion plus oscillation. Different from its in-plane counterpart, in a two-PMA-nanowire system, the oscillation of DWs before encountering is quite intrinsic—the frequency and the amplitude only depend on the separation between nanowires and the material of the nanowires, and have no relationship with applied current and the distance between two DWs. When applying proper currents, the coupled DWs will only oscillate without performing translational motion. The oscillation frequency can reach several GHz. Besides being tuned in a large range by varying the nanowire separation, the oscillation frequency can also be slightly modified by adjusting the magnetic anisotropy (K) or magnetization (Ms) of the nanowire. This finding may be of great importance for the design of microwave oscillator with stable and accurate frequency.
- Subjects :
- Physics
Condensed matter physics
Oscillation
Nanowire
General Physics and Astronomy
02 engineering and technology
021001 nanoscience & nanotechnology
Magnetocrystalline anisotropy
01 natural sciences
Condensed Matter::Materials Science
Magnetization
Magnetic anisotropy
Amplitude
0103 physical sciences
Perpendicular
010306 general physics
0210 nano-technology
Micromagnetics
Computer Science::Databases
Subjects
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 119
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........74bc7af4e68492f686489b7b56376acc
- Full Text :
- https://doi.org/10.1063/1.4953764