Strain-induced magnetization reorientation in epitaxial Cu/Ni/Cu rings
The role of the strain state in epitaxial (001)-oriented Cu/Ni(14 nm)/Cu rings is investigated using a combination of magnetic force microscopy and finite-element calculations. Rings with an external diameter of 3 and 2 μm and linewidth W larger than 400 nm show two different structures: domains wit...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/88755 https://orcid.org/0000-0003-2262-1249 |
| _version_ | 1811092313099730944 |
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| author | Corredor, E. C. Coffey, D. Ciria, M. Arnaudas, J. I. Aisa, J. 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 Corredor, E. C. Coffey, D. Ciria, M. Arnaudas, J. I. Aisa, J. Ross, Caroline A. |
| author_sort | Corredor, E. C. |
| collection | MIT |
| description | The role of the strain state in epitaxial (001)-oriented Cu/Ni(14 nm)/Cu rings is investigated using a combination of magnetic force microscopy and finite-element calculations. Rings with an external diameter of 3 and 2 μm and linewidth W larger than 400 nm show two different structures: domains with magnetization oriented in the radial direction exist at the inner and outer radius, separated by an area in the interior of the ring consisting of stripe domains with perpendicular magnetization. The former is the sole magnetic structure observed for W < 400 nm. Micromagnetic calculations on narrow-linewidth structures indicate that the radial domain-wall structure consists of elliptical Bloch lines with a shorter and longer length along the tangential and radial directions, respectively. Finite-element calculations show that the anisotropic relaxation of the in-plane strain is larger at the ring inner and outer edges than in the interior part of the ring and accounts for the reorientation of the magnetization direction. |
| first_indexed | 2024-09-23T15:16:26Z |
| format | Article |
| id | mit-1721.1/88755 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:16:26Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/887552022-09-29T13:48:34Z Strain-induced magnetization reorientation in epitaxial Cu/Ni/Cu rings Corredor, E. C. Coffey, D. Ciria, M. Arnaudas, J. I. Aisa, J. Ross, Caroline A. Massachusetts Institute of Technology. Department of Materials Science and Engineering Ross, Caroline A. The role of the strain state in epitaxial (001)-oriented Cu/Ni(14 nm)/Cu rings is investigated using a combination of magnetic force microscopy and finite-element calculations. Rings with an external diameter of 3 and 2 μm and linewidth W larger than 400 nm show two different structures: domains with magnetization oriented in the radial direction exist at the inner and outer radius, separated by an area in the interior of the ring consisting of stripe domains with perpendicular magnetization. The former is the sole magnetic structure observed for W < 400 nm. Micromagnetic calculations on narrow-linewidth structures indicate that the radial domain-wall structure consists of elliptical Bloch lines with a shorter and longer length along the tangential and radial directions, respectively. Finite-element calculations show that the anisotropic relaxation of the in-plane strain is larger at the ring inner and outer edges than in the interior part of the ring and accounts for the reorientation of the magnetization direction. Singapore-MIT Alliance National Science Foundation (U.S.) 2014-08-18T15:34:17Z 2014-08-18T15:34:17Z 2013-08 2013-08 Article http://purl.org/eprint/type/JournalArticle 1098-0121 1550-235X http://hdl.handle.net/1721.1/88755 Corredor, E. C., D. Coffey, M. Ciria, J. I. Arnaudas, J. Aisa, and C. A. Ross. “Strain-Induced Magnetization Reorientation in Epitaxial Cu/Ni/Cu Rings.” Phys. Rev. B 88, no. 5 (August 2013). © 2013 American Physical Society https://orcid.org/0000-0003-2262-1249 en_US http://dx.doi.org/10.1103/PhysRevB.88.054418 Physical Review B 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 American Physical Society American Physical Society |
| spellingShingle | Corredor, E. C. Coffey, D. Ciria, M. Arnaudas, J. I. Aisa, J. Ross, Caroline A. Strain-induced magnetization reorientation in epitaxial Cu/Ni/Cu rings |
| title | Strain-induced magnetization reorientation in epitaxial Cu/Ni/Cu rings |
| title_full | Strain-induced magnetization reorientation in epitaxial Cu/Ni/Cu rings |
| title_fullStr | Strain-induced magnetization reorientation in epitaxial Cu/Ni/Cu rings |
| title_full_unstemmed | Strain-induced magnetization reorientation in epitaxial Cu/Ni/Cu rings |
| title_short | Strain-induced magnetization reorientation in epitaxial Cu/Ni/Cu rings |
| title_sort | strain induced magnetization reorientation in epitaxial cu ni cu rings |
| url | http://hdl.handle.net/1721.1/88755 https://orcid.org/0000-0003-2262-1249 |
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