Thermally Activated Depinning of a Narrow Domain Wall from a Single Defect
- 13 April 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 96 (14) , 147204
Abstract
We describe the field induced depinning process of a magnetic domain wall (DW) from a single bidimensional nanometric defect. The DW propagates in a wire lithographed on a film with strong perpendicular anisotropy. We observe a statistical distribution of the relaxation time consistent with a Néel-Brown picture of magnetization reversal. This indicates that the nanometric DW can be considered as an ideal monodomain particle switching over a single energy barrier. Such a stochastic character of DW depinning has to be taken into account for spintronic applications.Keywords
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