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Direct observation of spin configurations and classification of switching processes in mesoscopic ferromagnetic rings

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2003_PhysRevB_Direct.pdf
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2003

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Kläui, Mathias
Vaz, Carlos A. F.
Bland, J. Anthony C.
Monchesky, Theodore L.
Unguris, John
Bauer, Ernst
Cherifi, Salia
Heun, Stefan
Locatelli, Andrea
Heyderman, Laura Jane

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Physical Review B. 2003, 68, 134426. Available under: doi: 10.1103/PhysRevB.68.134426

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Using nonintrusive imaging techniques we have directly observed the nanoscopic details of the magnetization configurations of epitaxial and polycrystalline mesoscopic ring structures with a <15-nm resolution. We have found head to head domain walls with different spin structures depending on ring width. Further, we can classify the geometry dependent switching processes according to the number of transitions (single, double, triple) that a ring undergoes in a hysteresis cycle. In the case of triple switching we find a state with a complete vortex core present in the ring.

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ISO 690KLÄUI, Mathias, Carlos A. F. VAZ, J. Anthony C. BLAND, Theodore L. MONCHESKY, John UNGURIS, Ernst BAUER, Salia CHERIFI, Stefan HEUN, Andrea LOCATELLI, Laura Jane HEYDERMAN, Z. CUI, 2003. Direct observation of spin configurations and classification of switching processes in mesoscopic ferromagnetic rings. In: Physical Review B. 2003, 68, 134426. Available under: doi: 10.1103/PhysRevB.68.134426
BibTex
@article{Klaui2003Direc-5075,
  year={2003},
  doi={10.1103/PhysRevB.68.134426},
  title={Direct observation of spin configurations and classification of switching processes in mesoscopic ferromagnetic rings},
  volume={68},
  journal={Physical Review B},
  author={Kläui, Mathias and Vaz, Carlos A. F. and Bland, J. Anthony C. and Monchesky, Theodore L. and Unguris, John and Bauer, Ernst and Cherifi, Salia and Heun, Stefan and Locatelli, Andrea and Heyderman, Laura Jane and Cui, Z.},
  note={Article Number: 134426}
}
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