Magnetization states in coupled Ni[subscript 80]Fe[subscript 20] bi-ring nanostructures
The effects of magnetostatic and exchange coupling between two circular Ni80Fe20 rings on the magnetization reversal process and spin configuration are investigated using focused magneto-optic Kerr measurements and magnetic force microscopy measurements. When the two rings are contiguous and exchang...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Institute of Physics Publishing
2012
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| Online Access: | http://hdl.handle.net/1721.1/71142 https://orcid.org/0000-0003-2262-1249 |
| _version_ | 1826209439772835840 |
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| author | Ren, Yin Jain, S. Adeyeye, Adekunle Olusola 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, Yin Jain, S. Adeyeye, Adekunle Olusola Ross, Caroline A. |
| author_sort | Ren, Yin |
| collection | MIT |
| description | The effects of magnetostatic and exchange coupling between two circular Ni80Fe20 rings on the magnetization reversal process and spin configuration are investigated using focused magneto-optic Kerr measurements and magnetic force microscopy measurements. When the two rings are contiguous and exchange coupled, the reversal occurs via a three-stage process leading to a significant reduction of the vortex–onion switching fields when compared to magnetostatically coupled ring pairs or isolated rings of the same lateral dimensions. For exchange-coupled rings, the chirality of the vortices in the two rings is correlated. The experimental results are compared to micromagnetic simulations. |
| first_indexed | 2024-09-23T14:22:32Z |
| format | Article |
| id | mit-1721.1/71142 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:22:32Z |
| publishDate | 2012 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | mit-1721.1/711422022-10-01T20:54:24Z Magnetization states in coupled Ni[subscript 80]Fe[subscript 20] bi-ring nanostructures Magnetization states in coupled Ni80Fe20 bi-ring nanostructures Ren, Yin Jain, S. Adeyeye, Adekunle Olusola Ross, Caroline A. Massachusetts Institute of Technology. Department of Materials Science and Engineering Singapore-MIT Alliance in Research and Technology (SMART) Ross, Caroline A. Ren, Yin Ross, Caroline A. Adeyeye, Adekunle Olusola The effects of magnetostatic and exchange coupling between two circular Ni80Fe20 rings on the magnetization reversal process and spin configuration are investigated using focused magneto-optic Kerr measurements and magnetic force microscopy measurements. When the two rings are contiguous and exchange coupled, the reversal occurs via a three-stage process leading to a significant reduction of the vortex–onion switching fields when compared to magnetostatically coupled ring pairs or isolated rings of the same lateral dimensions. For exchange-coupled rings, the chirality of the vortices in the two rings is correlated. The experimental results are compared to micromagnetic simulations. Singapore-MIT Alliance for Research and Technology Singapore. National Research Foundation (Grant no. NRF-G-CRP 2007–05) 2012-06-14T14:45:07Z 2012-06-14T14:45:07Z 2010-09 2010-06 Article http://purl.org/eprint/type/JournalArticle 1367-2630 http://hdl.handle.net/1721.1/71142 Ren, Y et al. “Magnetization States in Coupled Ni[subscript 80]Fe[subscript 20] Bi-ring Nanostructures.” New Journal of Physics 12.9 (2010): 093003. Web. https://orcid.org/0000-0003-2262-1249 en_US http://dx.doi.org/10.1088/1367-2630/12/9/093003 New Journal of Physics Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ application/pdf Institute of Physics Publishing New Journal of Physics |
| spellingShingle | Ren, Yin Jain, S. Adeyeye, Adekunle Olusola Ross, Caroline A. Magnetization states in coupled Ni[subscript 80]Fe[subscript 20] bi-ring nanostructures |
| title | Magnetization states in coupled Ni[subscript 80]Fe[subscript 20] bi-ring nanostructures |
| title_full | Magnetization states in coupled Ni[subscript 80]Fe[subscript 20] bi-ring nanostructures |
| title_fullStr | Magnetization states in coupled Ni[subscript 80]Fe[subscript 20] bi-ring nanostructures |
| title_full_unstemmed | Magnetization states in coupled Ni[subscript 80]Fe[subscript 20] bi-ring nanostructures |
| title_short | Magnetization states in coupled Ni[subscript 80]Fe[subscript 20] bi-ring nanostructures |
| title_sort | magnetization states in coupled ni subscript 80 fe subscript 20 bi ring nanostructures |
| url | http://hdl.handle.net/1721.1/71142 https://orcid.org/0000-0003-2262-1249 |
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