Berlin 2008 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 32: Postersession II: Spinstruct./Phase Trans. (1-10); Spinelectronics (11-15); Thin Films (16 - 36); Particles/Clusters (37-45); Multiferroics (46-54); Spindynamics/Spin Torque (55 - 76); Post Deadlines (77-79)

MA 32.62: Poster

Freitag, 29. Februar 2008, 11:15–14:00, Poster E

Very fast domain wall (dw) propagation in permalloy nanowires under the influence of strong transversal fields — •Sascha Glathe and Roland Mattheis — IPHTJena e.V., A.-Einstein-Str.9, D-07745 Jena

The field driven dw movement was explored in 150 nm wide, 15 nm thick and 45000 nm long permalloy films, which are the sense layer of GMR-stacks. In addition to the usually applied longitudinal fields parallel to the wire axis we applied strong fields orthogonal to the wire axis. Under the influence of a transversal field of Ht = 50 kA/m we observed very high dw velocities of about 7000 m/s. This is about 4-5 times the maximum field driven velocity puplished in the literature [1]. We explain this fast dw propagation with the influence of the transversal field on the dw.