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Angular dependence of the depinning field for head-to-head domain walls at constrictions

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Angular_dependence_of_the_depinning_field_for_head_to_head_domain_walls_at_constrictions.pdf
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2007

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Bedau, Daniel
Kläui, Mathias
Vaz, Carlos A. F.
Bland, J. Anthony C.
Faini, Giancarlo
Vila, Laurent
Wernsdorfer, Wolfgang

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-53519
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https://doi.org/10.1063/1.2710460
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Journal of Applied Physics. 2007, 101, 09F509. Available under: doi: 10.1063/1.2710460

Zusammenfassung

The angular dependence of the depinning field of vortex and transverse domain walls is determined experimentally for NiFe rings with nanometer size constrictions. From the angular dependence, we are able to deduce the potential landscape caused by the constriction and seen by the wall. The potential minimum for transverse walls is at the notch position so that these walls are pinned symmetrically inside the constriction. Vortex walls are pinned at a position adjacent to the constriction and this position can be determined from the angular variation of the depinning fields. Good agreement with the results of micromagnetic simulations is obtained.

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ISO 690BEDAU, Daniel, Mathias KLÄUI, Ulrich RÜDIGER, Carlos A. F. VAZ, J. Anthony C. BLAND, Giancarlo FAINI, Laurent VILA, Wolfgang WERNSDORFER, 2007. Angular dependence of the depinning field for head-to-head domain walls at constrictions. In: Journal of Applied Physics. 2007, 101, 09F509. Available under: doi: 10.1063/1.2710460
BibTex
@article{Bedau2007Angul-4787,
  year={2007},
  doi={10.1063/1.2710460},
  title={Angular dependence of the depinning field for head-to-head domain walls at constrictions},
  volume={101},
  journal={Journal of Applied Physics},
  author={Bedau, Daniel and Kläui, Mathias and Rüdiger, Ulrich and Vaz, Carlos A. F. and Bland, J. Anthony C. and Faini, Giancarlo and Vila, Laurent and Wernsdorfer, Wolfgang},
  note={Article Number: 09F509}
}
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