Journal
APPLIED PHYSICS LETTERS
Volume 89, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2221904
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Vortex dynamics in a restricted geometry is considered for a magnetic system consisting of ferromagnetic cylindrical dots. To describe the vortex dynamic susceptibility and relaxation the equation of motion for the vortex center position is applied. The dependencies of the vortex dynamic susceptibility and resonance linewidth on geometrical parameters are calculated. A method of extracting damping parameter from the vortex low-frequency resonance peaks is proposed and applied for interpretation of resonance data on FeNi circular dots. (c) 2006 American Institute of Physics.
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