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Influence of point defects on magnetic vortex structures

Rahm, M. ; Höllinger, R. ; Umanski, V. ; Weiss, Dieter


We employed micro-Hall magnetometry and micromagnetic simulations to investigate magnetic vortex pinning at single point defects in individual submicron-sized Permalloy disks. Small ferromagnetic particles containing artificial point defects can be fabricated by using an image reversal electron beam lithography process. Corresponding micromagnetic calculations, modeling the defects ...


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