TY - JOUR
T1 - Frustrated magnetic vortices in a triad of permalloy rings
T2 - Magneto-optical Kerr effect, magnetic force microscopy, and micromagnetic simulations
AU - Rose, V.
AU - Buchanan, K.
AU - Chung, S. H.
AU - Grimsditch, M.
AU - Metlushko, V.
AU - Hoffmann, A.
AU - Novosad, V.
AU - Bader, S. D.
AU - Ibach, H.
PY - 2006
Y1 - 2006
N2 - The field dependent magnetization of three mutually touching permalloy rings were investigated by means of the magneto-optical Kerr effect, magnetic force microscopy, and micromagnetic simulations. Each ring has a width of 0.2-1.8 μm, an outer diameter of 4 μm, and a thickness of 17 nm. Decreasing an applied magnetic field from saturation leads to the nucleation and annihilation of magnetic vortices, leaving at least one ring in a magnetically frustrated state. The properties of the magnetization reversal strongly depend on the ring width and on the direction of the applied field. Multiple complex reversal paths with vortexlike magnetization configurations are found.
AB - The field dependent magnetization of three mutually touching permalloy rings were investigated by means of the magneto-optical Kerr effect, magnetic force microscopy, and micromagnetic simulations. Each ring has a width of 0.2-1.8 μm, an outer diameter of 4 μm, and a thickness of 17 nm. Decreasing an applied magnetic field from saturation leads to the nucleation and annihilation of magnetic vortices, leaving at least one ring in a magnetically frustrated state. The properties of the magnetization reversal strongly depend on the ring width and on the direction of the applied field. Multiple complex reversal paths with vortexlike magnetization configurations are found.
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U2 - 10.1103/PhysRevB.73.094442
DO - 10.1103/PhysRevB.73.094442
M3 - Article
AN - SCOPUS:33645402133
SN - 1098-0121
VL - 73
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 9
M1 - 094442
ER -