| DOI | Resolve DOI: https://doi.org/10.1063/1.1857411 |
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| Author | Search for: Zhu, Xiaobin; Search for: Liu, Zhigang; Search for: Freeman, Mark1; Search for: Metlushko, Vitali |
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| Affiliation | - National Research Council of Canada. National Institute for Nanotechnology
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| Format | Text, Article |
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| Conference | 49th Annual Conference on Magnetism and Magnetic Materials, November 7-11, 2004, Jacksonville, Florida, United States |
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| Subject | 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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| Abstract | 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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| Publication date | 2005-05-02 |
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| Publisher | AIP Publishing LLC |
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| In | |
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| Language | English |
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| NPARC number | 12327952 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | ea7d19dd-4a71-4d42-8ffc-27be2c1cf504 |
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| Record created | 2009-09-10 |
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| Record modified | 2024-02-15 |
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