Mathematics – Dynamical Systems
Scientific paper
2001-01-09
Mathematics
Dynamical Systems
14 pages, 1 table, 10 figures
Scientific paper
This article addresses a problem of micromagnetics: the reversal of magnetic moments in layered spring magnets. A one-dimensional model is used of a film consisting of several atomic layers of a soft material on top of several atomic layers of a hard material. Each atomic layer is taken to be uniformly magnetized, and spatial inhomogeneities within an atomic layer are neglected. The state of such a system is described by a chain of magnetic spin vectors. Each spin vector behaves like a spinning top driven locally by the effective magnetic field and subject to damping (Landau-Lifshitz-Gilbert equation). A numerical integration scheme for the LLG equation is presented that is unconditionally stable and preserves the magnitude of the magnetization vector at all times. The results of numerical investigations for a bilayer in a rotating in-plane magnetic field show hysteresis with a basic period of $2\pi$ at moderate fields and hysteresis with a basic period of $\pi$ at strong fields.
Jiang Shao-Jian
Kaper Hans G.
Leaf Gary K.
No associations
LandOfFree
Hysteresis in layered spring magnets 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 Hysteresis in layered spring magnets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hysteresis in layered spring magnets will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-66131