Vortex–antivortex pair driven magnetization dynamics studied by micromagnetic simulations | Zendy

KiSuk Lee | Zendy; Byoung-Woo Kang | Zendy; YoungSang Yu | Zendy; SangKoog Kim | Zendy

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Vortex–antivortex pair driven magnetization dynamics studied by micromagnetic simulations

Author(s) -

KiSuk Lee,

Byoung-Woo Kang,

YoungSang Yu,

SangKoog Kim

Publication year - 2004

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1784892

Subject(s) - micromagnetics , magnetization , vortex , condensed matter physics , magnetization dynamics , dynamics (music) , physics , materials science , magnetic field , mechanics , quantum mechanics , acoustics

The magnetization dynamics approaching an equilibrium vortex state from an initial nonequilibrium state under zero magnetic field in a circular shaped Fe disk with thickness of 5 nm and a diameter of 1200 nm were studied. Starting from the initial random configuration of in-plane magnetizations, a great number of vortex and antivortex pairs energetically favorable to form were generated at a lot of nucleation sites. It was found that the sites propagated and then were annihilated by their attractive interactions during the relaxation dynamic process. The study shows that temporal magnetization evolutions can be dominated by the nucleation of the vortex and antivortex pairs, followed by their propagation and annihilation.open222

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