Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-05-11
J. Appl. Phys. 109, 104303 (2011)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 4 figures
Scientific paper
Nanomagnetism has recently attracted explosive attention, in particular, because of the enormous potential applications in information industry, e.g. new harddisk technology, race-track memory[1], and logic devices[2]. Recent technological advances[3] allow for the fabrication of single-domain magnetic nanoparticles (Stoner particles), whose magnetization dynamics have been extensively studied, both experimentally and theoretically, involving magnetic fields[4-9] and/or by spin-polarized currents[10-20]. From an industrial point of view, important issues include lowering the critical switching field $H_c$, and achieving short reversal times. Here we predict a new technological perspective: $H_c$ can be dramatically lowered (including $H_c=0$) by appropriately engineering the dipole-dipole interaction (DDI) in a system of two synchronized Stoner particles. Here, in a modified Stoner-Wohlfarth (SW) limit, both of the above goals can be achieved. The experimental feasibility of realizing our proposal is illustrated on the example of cobalt nanoparticles.
López Alexander
Schliemann John
Sun Zengqi
No associations
LandOfFree
Zero-field magnetization reversal of two-body Stoner particles with dipolar interaction 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 Zero-field magnetization reversal of two-body Stoner particles with dipolar interaction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zero-field magnetization reversal of two-body Stoner particles with dipolar interaction will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-384655