1. Tailoring of Domain Wall Devices for Sensing Applications.
- Author
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Corte-Leon, Hector, Krzysteczko, Patryk, Schumacher, Hans Werner, Manzin, Alessandra, Antonov, Vladimir, and Kazakova, Olga
- Subjects
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DOMAIN walls (Ferromagnetism) , *MAGNETORESISTANCE measurement , *MAGNETIC sensors , *STOCHASTIC analysis , *MICROMAGNETICS , *MAGNETIZATION - Abstract
We perform magnetoresistance (MR) measurements to experimentally track magnetic domain wall pinning/depinning process in L-shaped Permalloy (Py) nanostructures with widths in the range 50โ400 nm. We demonstrate that the field interval between the pinning/depinning events increases with the reduction of the nanowire width. The most reproducible measurements are obtained from the narrowest devices. MR measurements reveal that the stochastic contribution to pinning/depinning processes is higher when the applied field is oriented symmetrically with respect to both arms of the device. The interpretation of experimental results is supported by micromagnetic simulations. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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