| DOI | Trouver le DOI : https://doi.org/10.1063/1.1857411 |
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| Auteur | Rechercher : Zhu, Xiaobin; Rechercher : Liu, Zhigang; Rechercher : Freeman, Mark1; Rechercher : Metlushko, Vitali |
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| Affiliation | - Conseil national de recherches du Canada. Institut national de nanotechnologie
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| Format | Texte, Article |
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| Conférence | 49th Annual Conference on Magnetism and Magnetic Materials, November 7-11, 2004, Jacksonville, Florida, United States |
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| Sujet | arrays; ferromagnetic materials; Kerr magneto-optical effect; magnetic hysteresis; magnetic switching; magnetic thin films; metallic thin films; micromagnetics; nucleation; Permalloy; rings (structures) |
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| Résumé | Diffracted magneto-optical Kerr effect (MOKE) technique was used to study the quasistatic magnetization switching of thin-film permalloy ring structures. Two different switching mechanisms were observed, dependent on the width of the annular portion of the ring. For small widths, a two-step switching is found, from an initial onion state to a state of circulation magnetization around the ring to a final onion state. In the wider rings, the switching from the circulation state to the onion state takes place via nucleation of a vortex within the annulus. The presence of the vortex is determined by the higher spatial frequency information revealed by diffracted MOKE, and through comparison with micromagnetic simulation. |
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| Date de publication | 2005-05-02 |
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| Maison d’édition | AIP Publishing LLC |
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| Dans | |
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| Langue | anglais |
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| Numéro NPARC | 12327952 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | ea7d19dd-4a71-4d42-8ffc-27be2c1cf504 |
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| Enregistrement créé | 2009-09-10 |
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| Enregistrement modifié | 2024-02-15 |
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