Chou, K and Puzic, A and Stoll, H and Schütz, G and Wayenberge, B and Tyliszczak, T and Rott, K and Reiss, G and Brückl, H and Neudecker, I and Weiss, Dieter and Back, Christian (2006) Vortex dynamics in coupled ferromagnetic multilayer structures. Journal of Applied Physics 99, 08F305.
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Magnetization dynamics in ferromagnetic multilayer structures was studied by time- resolved transmission x-ray microscopy. A square- shaped 11 m2 trilayer structure consisting of Co20 nm/Cu10 nm /Permalloy Ni80Fe2020 nm was investigated. Each ferromagnetic layer showed a Landau-like domain configuration with a single vortex. A gyrotropic vortex motion was excited by an in-plane magnetic field alternating at a frequency of 250 MHz. The movement of the magnetic vortex in each individual magnetic layer was imaged by taking advantage of the element specificity of the x-ray magnetic circular dichroism. A 180° phase shift between the gyrotropic vortex motion in the Permalloy and the Co layer was observed. This phase shift can be ascribed to the magnetic coupling between the layers.
|Institutions:||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:||25 May 2009 15:22|
|Last Modified:||05 Aug 2009 15:58|
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