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Nucleation and annihilation of magnetic vortices in Pacman-like nanodots observed by micro-Hall probes

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8 Author(s)
Precner, M. ; Inst. of Electr. Eng., Bratislava, Slovakia ; Gregusova, D. ; Soltys, J. ; Fedor, J.
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We have used micro-Hall probe for the study of vortex dynamics in micromagnetic objects with lowered symmetry. The Pacman-like nanodot of the diameter of 1 μm was placed directly on the Hall probe and the signal was red in band resistance configuration. We show that the vortex nucleation and annihilation, as well as s-and c-state creation/annihilation are clearly visible on the magnetization reversal characteristics at 77 K. The experimental characteristics is in good agreement with the one calculated by micromagnetic simulations.

Published in:

Advanced Semiconductor Devices & Microsystems (ASDAM), 2012 Ninth International Conference on

Date of Conference:

11-15 Nov. 2012