Title: Noninvasive magnetic imaging and magnetization measurement of isolated mesoscopic Co rings
Authors: Bekaert, Joost
Buntinx, Dieter
Van Haesendonck, Christian
Moshchalkov, Victor
De Boeck, J
Borghs, Gustaaf
Metlushko, V #
Issue Date: Oct-2002
Publisher: Amer inst physics
Series Title: Applied Physics Letters vol:81 issue:18 pages:3413-3415
Abstract: A high-resolution scanning Hall probe microscope was used as a noninvasive technique to visualize the magnetization reversal in an array of micron-size Co rings. Two stable "onion" states at remanence and "vortex" states at switching fields were found. To rule out a possible influence of dipole-dipole interaction between ring elements on remagnetization processes, an isolated Co ring was deposited on top of a Hall magnetometer and extremely sharp transitions from onion to vortex and from vortex to onion state of opposite polarity were resolved. Our results were supported by MOKE magnetization measurements and micromagnetic simulations. (C) 2002 American Institute of Physics.
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
Physics and Astronomy - miscellaneous
# (joint) last author

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