Neudecker, Ingo and Perzlmaier, Korbinian and Hoffmann, Frank and Woltersdorf, Georg and Buess, Matthias and Weiss, Dieter and Back, Christian (2006) Modal spectrum of permalloy disks excited by in-plane magnetic fields. Physical Review B (PRB) 73 (13), p. 1.
The mode spectrum of 4 micron sized ferromagnetic permalloy disks exhibiting a vortex structure in equilibrium is investigated in detail.
Normal modes accessible by in-plane field excitations are examined. By
means of spatially resolved techniques using Kerr microscopy we
recorded the modal structure of the disks at zero bias field. We
employed pulsed and continuous wave excitation. As a result we report
on normal modes up to the fifth order. Using inductive and spatially
resolved resonance measurements the evolution of the mode spectrum as a
function of an external magnetic field was investigated. Quantized
modes in longitudinal as well as in transverse direction in the uniform
magnetized disks were observed. Good agreement between the experimental
results and those from micromagnetic simulations was found.
|Institutions:|| Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back|
Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||17 May 2010 07:21|
|Last Modified:||20 Jul 2011 22:28|