360° domain walls: stability, magnetic field and electric current effects
The formation of 360° magnetic domain walls (360DWs) in Co and Ni[subscript 80]Fe[subscript 20] thin film wires was demonstrated experimentally for different wire widths, by successively injecting two 180° domain walls (180DWs) into the wire. For narrow wires (≤ 50 nm wide for Co), edge roughness pr...
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| Format: | Article |
| Language: | en_US |
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IOP Publishing
2016
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| Online Access: | http://hdl.handle.net/1721.1/105358 https://orcid.org/0000-0002-2208-5872 https://orcid.org/0000-0002-9884-0598 https://orcid.org/0000-0002-2399-0823 https://orcid.org/0000-0002-3056-4822 https://orcid.org/0000-0003-2201-5257 https://orcid.org/0000-0003-2262-1249 |
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| author | Zhang, Jinshuo Siddiqui, Saima Afroz Ho, Pin Currivan, Jean Anne Lage, Enno Bono, David C Baldo, Marc A Ross, Caroline A. |
| author2 | Massachusetts Institute of Technology. Center for Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Center for Materials Science and Engineering Zhang, Jinshuo Siddiqui, Saima Afroz Ho, Pin Currivan, Jean Anne Lage, Enno Bono, David C Baldo, Marc A Ross, Caroline A. |
| author_sort | Zhang, Jinshuo |
| collection | MIT |
| description | The formation of 360° magnetic domain walls (360DWs) in Co and Ni[subscript 80]Fe[subscript 20] thin film wires was demonstrated experimentally for different wire widths, by successively injecting two 180° domain walls (180DWs) into the wire. For narrow wires (≤ 50 nm wide for Co), edge roughness prevented the combination of the 180DWs into a 360DW, and for wide wires (200 nm for Co) the 360DW was unstable and annihilated spontaneously, but over an intermediate range of wire widths, reproducible 360DW formation occurred. The annihilation and dissociation of 360DWs was demonstrated by applying a magnetic field parallel to the wire, showing that annihilation fields were several times higher than dissociation fields in agreement with micromagnetic modeling. The annihilation of a 360DW by current pulsing was demonstrated. |
| first_indexed | 2024-09-23T11:05:17Z |
| format | Article |
| id | mit-1721.1/105358 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:05:17Z |
| publishDate | 2016 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1053582022-09-27T17:05:03Z 360° domain walls: stability, magnetic field and electric current effects Zhang, Jinshuo Siddiqui, Saima Afroz Ho, Pin Currivan, Jean Anne Lage, Enno Bono, David C Baldo, Marc A Ross, Caroline A. Massachusetts Institute of Technology. Center for Materials Science and Engineering Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Research Laboratory of Electronics Zhang, Jinshuo Siddiqui, Saima Afroz Ho, Pin Currivan, Jean Anne Lage, Enno Bono, David C Baldo, Marc A Ross, Caroline A The formation of 360° magnetic domain walls (360DWs) in Co and Ni[subscript 80]Fe[subscript 20] thin film wires was demonstrated experimentally for different wire widths, by successively injecting two 180° domain walls (180DWs) into the wire. For narrow wires (≤ 50 nm wide for Co), edge roughness prevented the combination of the 180DWs into a 360DW, and for wide wires (200 nm for Co) the 360DW was unstable and annihilated spontaneously, but over an intermediate range of wire widths, reproducible 360DW formation occurred. The annihilation and dissociation of 360DWs was demonstrated by applying a magnetic field parallel to the wire, showing that annihilation fields were several times higher than dissociation fields in agreement with micromagnetic modeling. The annihilation of a 360DW by current pulsing was demonstrated. National Science Foundation (U.S.) (Award ECCS 1101798) 2016-11-17T23:53:53Z 2016-11-17T23:53:53Z 2016-05 2016-03 Article http://purl.org/eprint/type/JournalArticle 1367-2630 1367-2630 http://hdl.handle.net/1721.1/105358 Zhang, Jinshuo et al. “360° Domain Walls: Stability, Magnetic Field and Electric Current Effects.” New Journal of Physics 18.5 (2016): 53028. © 2016 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft https://orcid.org/0000-0002-2208-5872 https://orcid.org/0000-0002-9884-0598 https://orcid.org/0000-0002-2399-0823 https://orcid.org/0000-0002-3056-4822 https://orcid.org/0000-0003-2201-5257 https://orcid.org/0000-0003-2262-1249 en_US http://dx.doi.org/10.1088/1367-2630/18/5/053028 New Journal of Physics Creative Commons Attribution 3.0 Unported licence http://creativecommons.org/licenses/by/3.0/ application/pdf IOP Publishing IOP Publishing |
| spellingShingle | Zhang, Jinshuo Siddiqui, Saima Afroz Ho, Pin Currivan, Jean Anne Lage, Enno Bono, David C Baldo, Marc A Ross, Caroline A. 360° domain walls: stability, magnetic field and electric current effects |
| title | 360° domain walls: stability, magnetic field and electric current effects |
| title_full | 360° domain walls: stability, magnetic field and electric current effects |
| title_fullStr | 360° domain walls: stability, magnetic field and electric current effects |
| title_full_unstemmed | 360° domain walls: stability, magnetic field and electric current effects |
| title_short | 360° domain walls: stability, magnetic field and electric current effects |
| title_sort | 360° domain walls stability magnetic field and electric current effects |
| url | http://hdl.handle.net/1721.1/105358 https://orcid.org/0000-0002-2208-5872 https://orcid.org/0000-0002-9884-0598 https://orcid.org/0000-0002-2399-0823 https://orcid.org/0000-0002-3056-4822 https://orcid.org/0000-0003-2201-5257 https://orcid.org/0000-0003-2262-1249 |
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