Rahm, M and Stahl, Joachim and Wegscheider, Werner and Weiss, Dieter (2004) Multistable switching due to magnetic vortices pinned at artificial pinning sites. Applied Physics Letters 85, p. 1553.
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Magnetic vortices form the ground state in micron and submicron ferromagnetic disks. By inserting artificial defects (antidots) into a submicron ferromagnetic disk, magnetic vortices can be pinned controllably thus enabling a different way for magnetic switching. We show that by inserting n antidots into a disk magnetization reversal takes place via n-1 jumps of the vortex core between neighboring antidots. This cannot only be used to establish stable two-state switching for n = 2, but also to realize a multilevel remanent state with low switching fields.
|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 15:21|
|Last Modified:||23 Dec 2009 05:09|
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