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Spin-Motive Force Caused by Vortex Gyration in a Circular Nanodisk with Holes

Journal of Magnetics, Volume 16, Number 1, 31 Mar 2011, Pages 6-9
Jung-Hwan Moon (Dept. of Materials Science of Engineering, Korea University), Kyung-Jin Lee * (Dept. of Materials Science of Engineering, Korea University)
Abstract

Spin-motive force has drawn attention because it contains a fundamental physical property. Spin-motive force creates effective electric and magnetic fields in moving magnetization; a vortex is a plausible system for observing the spin-motive force because of the abrupt profile of magnetization. However, the time-averaged value of a spin-motive force becomes zero when a vortex core undergoes gyroscopic motion. By means of micromagnetic simulation , we demonstrates that a non-zero time-averaged electric field induced by spin-motive force under certain conditions. We propose an experimental method of detecting spin-motive force that provides a better understanding of spin transport in ferromagnetic system.

 

Keywords: micromagnetic calculation; vortex dynamics; spin-motive force
DOI: 10.4283/JMAG.2011.16.1.006
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