Magnetic-dipolar and electromagnetic vortices in quasi-2D ferrite disks

Details Magnetic-dipolar and electromagnetic vortices in quasi-2D ferrite disks Magnetic-dipolar and electromagnetic vortices in quasi-2D ferrite disks

2008-07-27

arxiv.org/abs/0807.4281v1

Physics

Condensed Matter

Materials Science

14 figures

Scientific paper

Magnetic-dipolar-mode (MDM) oscillations in a quasi-2D ferrite disk show unique dynamical symmetry properties resulting in appearance of topologically distinct structures. Based on the magnetostatic (MS) spectral problem solutions, in this paper we give an evidence for eigen MS power-flow-density vortices in a ferrite disk. Due to these circular eigen power flows, the MDMs are characterized by MS energy eigen states. It becomes evident that the reason of stability of the vortex configurations in saturated ferrite samples is completely different from the nature of stability in magnetically soft cylindrical dots. We found a clear correspondence between analytically derived MDM vortex states and numerically modeled electromagnetic vortices in quasi-2D ferrite disks.

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