Magnetic Vortex Core Dynamics in Cylindrical Ferromagnetic Dots
نویسندگان
چکیده
منابع مشابه
Magnetic vortex core observation in circular dots of permalloy
Spin structures of nanoscale magnetic dots are the subject of increasing scientific effort, as the confinement of spins imposed by the geometrical restrictions makes these structures comparable to some internal characteristic length scales of the magnet. For a vortex (a ferromagnetic dot with a curling magnetic structure), a spot of perpendicular magnetization has been theoretically predicted t...
متن کاملFerromagnetic vortex core switching at elevated temperatures
An approach for the investigation of vortex core switching is presented. Thermal effects up to the Curie point are included in a micromagnetic framework based on the recently developed Landau-Lifshitz-Bloch equation. In this approach it is easier to avoid numerical discretization artifacts, commonly present when a Bloch point is mediating the switching process. Switching in thin circular permal...
متن کاملImaging magnetic vortex configurations in ferromagnetic nanotubes
M. Wyss,1 A. Mehlin,1 B. Gross,1 A. Buchter,1 A. Farhan,2,3 M. Buzzi,4 A. Kleibert,4 G. Tütüncüoglu,5 F. Heimbach,6 A. Fontcuberta i Morral,5 D. Grundler,7 and M. Poggio1,* 1Department of Physics, University of Basel, 4056 Basel, Switzerland 2Laboratory for Microand Nanotechnology, Paul Scherrer Institute, 5232 Villigen, Switzerland 3Laboratory for Mesoscopic Systems, Department of Materials, E...
متن کاملSpin Vortex Resonance in Non-planar Ferromagnetic Dots
In planar structures, the vortex resonance frequency changes little as a function of an in-plane magnetic field as long as the vortex state persists. Altering the topography of the element leads to a vastly different dynamic response that arises due to the local vortex core confinement effect. In this work, we studied the magnetic excitations in non-planar ferromagnetic dots using a broadband m...
متن کاملMagnetic vortex dynamics in a two-dimensional square lattice of ferromagnetic nanodisks
The dynamics of magnetostatically coupled vortices in ferromagnetic two-dimensional (2D) nanodisk arrays is theoretically investigated using the rigid vortex model and Thiele’s equation whereby the circular motion with the lowest energy for each vortex core is described. We present here dispersion relations and density of states for eigenfrequencies of coherently rotating vortices with ordered ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2006
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.96.067205