Strain induced vortex core switching in planar magnetostrictive nanostructures
The dynamics of magnetic vortex cores is of great interest because the gyrotropic mode has applications in spin torque driven magnetic microwave oscillators, and also provides a means to flip the direction of the core for use in magnetic storage devices. Here, we propose a new means of stimulating m...
| Main Authors: | , , , , |
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| Format: | Article |
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American Physical Society
2015
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| Online Access: | https://eprints.nottingham.ac.uk/34708/ |
| _version_ | 1848794917160091648 |
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| author | Ostler, T.A. Cuadrado, R. Chantrell, R.W. Rushforth, A.W. Cavill, S.A. |
| author_facet | Ostler, T.A. Cuadrado, R. Chantrell, R.W. Rushforth, A.W. Cavill, S.A. |
| author_sort | Ostler, T.A. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The dynamics of magnetic vortex cores is of great interest because the gyrotropic mode has applications in spin torque driven magnetic microwave oscillators, and also provides a means to flip the direction of the core for use in magnetic storage devices. Here, we propose a new means of stimulating magnetization reversal of the vortex core by applying a time-varying strain gradient to planar structures of the magnetostrictive material Fe81Ga19 (Galfenol), coupled to an underlying piezoelectric layer. Using micromagnetic simulations we have shown that the vortex core state can be deterministically reversed by electric field control of the time-dependent strain-induced anisotropy. |
| first_indexed | 2025-11-14T19:23:48Z |
| format | Article |
| id | nottingham-34708 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:23:48Z |
| publishDate | 2015 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-347082020-05-04T17:15:30Z https://eprints.nottingham.ac.uk/34708/ Strain induced vortex core switching in planar magnetostrictive nanostructures Ostler, T.A. Cuadrado, R. Chantrell, R.W. Rushforth, A.W. Cavill, S.A. The dynamics of magnetic vortex cores is of great interest because the gyrotropic mode has applications in spin torque driven magnetic microwave oscillators, and also provides a means to flip the direction of the core for use in magnetic storage devices. Here, we propose a new means of stimulating magnetization reversal of the vortex core by applying a time-varying strain gradient to planar structures of the magnetostrictive material Fe81Ga19 (Galfenol), coupled to an underlying piezoelectric layer. Using micromagnetic simulations we have shown that the vortex core state can be deterministically reversed by electric field control of the time-dependent strain-induced anisotropy. American Physical Society 2015-08-07 Article PeerReviewed Ostler, T.A., Cuadrado, R., Chantrell, R.W., Rushforth, A.W. and Cavill, S.A. (2015) Strain induced vortex core switching in planar magnetostrictive nanostructures. Physical Review Letters, 115 (6). 067202. ISSN 0031-9007 http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.067202 doi:10.1103/PhysRevLett.115.067202 doi:10.1103/PhysRevLett.115.067202 |
| spellingShingle | Ostler, T.A. Cuadrado, R. Chantrell, R.W. Rushforth, A.W. Cavill, S.A. Strain induced vortex core switching in planar magnetostrictive nanostructures |
| title | Strain induced vortex core switching in planar magnetostrictive nanostructures |
| title_full | Strain induced vortex core switching in planar magnetostrictive nanostructures |
| title_fullStr | Strain induced vortex core switching in planar magnetostrictive nanostructures |
| title_full_unstemmed | Strain induced vortex core switching in planar magnetostrictive nanostructures |
| title_short | Strain induced vortex core switching in planar magnetostrictive nanostructures |
| title_sort | strain induced vortex core switching in planar magnetostrictive nanostructures |
| url | https://eprints.nottingham.ac.uk/34708/ https://eprints.nottingham.ac.uk/34708/ https://eprints.nottingham.ac.uk/34708/ |