Effects of Interlayer Coupling in Elongated Ni80Fe20/Au/Co Nanorings
We describe the magnetization reversal processes in multilayer elongated Ni80 [subscript 80] Fe20 [subscript 20](10 nm)/Au(t = 0 to 20 nm)/ Co(20 nm)/Si(001) nanorings. For a field applied in-plane along the long axis, the hysteresis loops display a two-step switching for both t = 0 nm and 2 nm, and...
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| Format: | Article |
| Language: | en_US |
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Institute of Electrical and Electronics Engineers
2011
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| Online Access: | http://hdl.handle.net/1721.1/62015 https://orcid.org/0000-0003-2262-1249 |
| _version_ | 1826199600462036992 |
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| author | Ren, Yang Adeyeye, Adekunle Olusola Nam, C. H. Ross, Caroline A. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Ren, Yang Adeyeye, Adekunle Olusola Nam, C. H. Ross, Caroline A. |
| author_sort | Ren, Yang |
| collection | MIT |
| description | We describe the magnetization reversal processes in multilayer elongated Ni80 [subscript 80] Fe20 [subscript 20](10 nm)/Au(t = 0 to 20 nm)/ Co(20 nm)/Si(001) nanorings. For a field applied in-plane along the long axis, the hysteresis loops display a two-step switching for both t = 0 nm and 2 nm, and a three-step switching for t = 10 nm and 20 nm. Onion-to-vortex and vortex-to-reverse onion state transitions occur for a thin Au spacer due to strong exchange coupling between the layers. For a thick Au spacer layer, the Ni80 [subscript 80] Fe20 [subscript 20] layer switches first, then a two-step reversal of the Co, correlated with domain motion in the Ni80 [subscript 80] Fe20 [subscript 20], occurs without the formation of vortex states as a result of magnetostatic interactions. There is a good agreement between the experimental results and micromagnetic simulations. |
| first_indexed | 2024-09-23T11:22:30Z |
| format | Article |
| id | mit-1721.1/62015 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:22:30Z |
| publishDate | 2011 |
| publisher | Institute of Electrical and Electronics Engineers |
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| spelling | mit-1721.1/620152022-09-27T19:07:28Z Effects of Interlayer Coupling in Elongated Ni80Fe20/Au/Co Nanorings Effects of interlayer coupling in elongated Ni [subscript 80] Fe [subscript 20]/Au/Co nanorings Ren, Yang Adeyeye, Adekunle Olusola Nam, C. H. Ross, Caroline A. Massachusetts Institute of Technology. Department of Materials Science and Engineering Singapore-MIT Alliance in Research and Technology (SMART) Ross, Caroline A. Nam, C. H. Ross, Caroline A. We describe the magnetization reversal processes in multilayer elongated Ni80 [subscript 80] Fe20 [subscript 20](10 nm)/Au(t = 0 to 20 nm)/ Co(20 nm)/Si(001) nanorings. For a field applied in-plane along the long axis, the hysteresis loops display a two-step switching for both t = 0 nm and 2 nm, and a three-step switching for t = 10 nm and 20 nm. Onion-to-vortex and vortex-to-reverse onion state transitions occur for a thin Au spacer due to strong exchange coupling between the layers. For a thick Au spacer layer, the Ni80 [subscript 80] Fe20 [subscript 20] layer switches first, then a two-step reversal of the Co, correlated with domain motion in the Ni80 [subscript 80] Fe20 [subscript 20], occurs without the formation of vortex states as a result of magnetostatic interactions. There is a good agreement between the experimental results and micromagnetic simulations. Singapore-MIT Alliance 2011-04-01T18:17:59Z 2011-04-01T18:17:59Z 2010-05 2009-10 Article http://purl.org/eprint/type/JournalArticle 0018-9464 INSPEC Accession Number: 11313928 http://hdl.handle.net/1721.1/62015 Adeyeye, A.O., C. Nam, and C.A. Ross, with Yang Ren. “Effects of Interlayer Coupling in Elongated \hbox {Ni}_{80}\hbox {Fe}_{20}/\hbox {Au/Co} Nanorings.” Magnetics, IEEE Transactions On 46.6 (2010) : 1906-1909. Copyright © 2010, IEEE https://orcid.org/0000-0003-2262-1249 en_US http://dx.doi.org/10.1109/tmag.2009.2038799 IEEE transactions on magnetics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Institute of Electrical and Electronics Engineers IEEE |
| spellingShingle | Ren, Yang Adeyeye, Adekunle Olusola Nam, C. H. Ross, Caroline A. Effects of Interlayer Coupling in Elongated Ni80Fe20/Au/Co Nanorings |
| title | Effects of Interlayer Coupling in Elongated Ni80Fe20/Au/Co Nanorings |
| title_full | Effects of Interlayer Coupling in Elongated Ni80Fe20/Au/Co Nanorings |
| title_fullStr | Effects of Interlayer Coupling in Elongated Ni80Fe20/Au/Co Nanorings |
| title_full_unstemmed | Effects of Interlayer Coupling in Elongated Ni80Fe20/Au/Co Nanorings |
| title_short | Effects of Interlayer Coupling in Elongated Ni80Fe20/Au/Co Nanorings |
| title_sort | effects of interlayer coupling in elongated ni80fe20 au co nanorings |
| url | http://hdl.handle.net/1721.1/62015 https://orcid.org/0000-0003-2262-1249 |
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