Rahm, M and Schneider, M and Biberger, Josef and Pulwey, Ralph and Umanski, V and Zweck, Josef and Weiss, Dieter (2003) Vortex nucleation in sub-micrometer ferromagnetic disks. Applied Physics Letters 82, p. 4110.
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We investigate both experimentally and by means of micromagnetic calculations magnetic states preceding vortex formation in permalloy nanodisks. In experiment, we used micro-Hall sensors fabricated from GaAs/AlGaAs heterojunction material to measure stray field hysteresis loops of individual disks. Micromagnetic calculations involving different micromagnetic codes allowed us to interpret the experimental results. Both calculations and experiments suggest that vortex formation can be reached via different precursor states.
|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 13:21|
|Last Modified:||05 Aug 2009 13:57|