Dynamics of vortex core switching in ferromagnetic nanodisks

Dynamics of vortex core switching in ferromagnetic nanodisks

Dynamics of magnetic vortex core switching in nanometer-scale Permalloy disk, having a single vortex ground state, was investigated by micromagnetic modeling. When an in-plane magnetic field pulse with an appropriate strength and duration is applied to the vortex structure, additional two vortices,...

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Veröffentlicht in:Applied physics letters 2006-12, Vol.89 (26), p.262507-262507-3
Hauptverfasser: Xiao, Q. F., Rudge, J., Choi, B. C., Hong, Y. K., Donohoe, G.
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container_issue 26
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container_title Applied physics letters
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creator Xiao, Q. F.
Rudge, J.
Choi, B. C.
Hong, Y. K.
Donohoe, G.
description Dynamics of magnetic vortex core switching in nanometer-scale Permalloy disk, having a single vortex ground state, was investigated by micromagnetic modeling. When an in-plane magnetic field pulse with an appropriate strength and duration is applied to the vortex structure, additional two vortices, i.e., a circular and an antivortex, are created near the original vortex core. Sequentially, the vortex-antivortex pair annihilates. A spin wave is created at the annihilation point and propagated through the entire element; the relaxed state for the system is the single vortex state with a switched vortex core.
doi_str_mv 10.1063/1.2424673
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title Dynamics of vortex core switching in ferromagnetic nanodisks
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