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http://dx.doi.org/10.4283/JKMS.2012.22.6.195

Three-Dimensional Dynamics of Magnetic Vortex Core in a Nanodisk  

Moon, Jung-Hwan (Department of Materials Science of Engineering, Korea University)
Lee, Kyung-Jin (Department of Materials Science of Engineering, Korea University)
Kim, Dong-Hyun (Department of Physics, Chungbuk National University)
Piao, Hong-Guang (Department of Physics, Chungbuk National University)
Abstract
Using micromagnetic simulation, we investigated the effect of thickness of a nanodisk on a resonance frequency of vortex gyration. We observed that the resonance frequency increases with increasing thickness in both cases of 2-dimensional (2D) and 3-dimensional (3D) calculation. However, there is a difference in the increasing rate of resonance frequency between 2D and 3D modeling owing to dynamically developed inhomogeneous magnetic texture along the thickness direction of disk in 3D modeling.
Keywords
magnetic vortex structure; magnetization dynamics; micromagnetics;
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