Physics – Condensed Matter – Materials Science
Scientific paper
2008-07-11
Phys. Rev. Lett. 101, 267206 (2008)
Physics
Condensed Matter
Materials Science
25 pages, 5 figures. To whom all correspondence should be addressed: sangkoog@snu.ac.kr
Scientific paper
10.1103/PhysRevLett.101.267206
The universal criterion for ultrafast vortex-core switching between the up- and down-core bistates in soft magnetic nanodots was investigated by micromagnetic simulations along with analytical calculations. Vortex-core switching occurs whenever the velocity of vortex-core motion reaches the critical velocity that is expressed as (e.g. m/s for Permalloy), where Aex is the exchange stiffness, and is the gyromagnetic ratio. On the basis of the above results, phase diagrams for the vortex-core switching event and switching times with respect to both the amplitude and frequency of applied circularly rotating magnetic field were calculated, which offer practical guidance for implementing nanodots in vortex states into future solid-state information-storage devices.
Choi Youn-Seok
Fischer Peter
Guslienko Konstantin Yu.
Jung Hyunsung
Kim Sang-Koog
No associations
LandOfFree
Universal criterion and phase diagram for switching a magnetic vortex core in soft magnetic nanodots does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Universal criterion and phase diagram for switching a magnetic vortex core in soft magnetic nanodots, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Universal criterion and phase diagram for switching a magnetic vortex core in soft magnetic nanodots will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-576016