Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2007-10-12
J. Appl. Phys. 103, 07D917 (2008)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
10.1063/1.2832675
Thin nanomagnetic rings have generated interest for fundamental studies of magnetization reversal and also for their potential in various applications, particularly as magnetic memories. They are a rare example of a geometry in which an analytical solution for the rate of thermally induced magnetic reversal has been determined, in an approximation whose errors can be estimated and bounded. In this work, numerical simulations of soft ferromagnetic rings are used to explore aspects of the analytical solution. The evolution of the energy near the transition states confirms that, consistent with analytical predictions, thermally induced magnetization reversal can have one of two intermediate states: either constant or soliton-like saddle configurations, depending on ring size and externally applied magnetic field. The results confirm analytical predictions of a transition in thermally activated reversal behavior as magnetic field is varied at constant ring size. Simulations also show that the analytic one dimensional model continues to hold even for wide rings.
Chaves-O'Flynn Gabriel D.
Kent Andrew D.
Stein Daniel L.
Xiao Ke
No associations
LandOfFree
Micromagnetic Simulations of Ferromagnetic Rings 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 Micromagnetic Simulations of Ferromagnetic Rings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Micromagnetic Simulations of Ferromagnetic Rings will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-724042