Modification of perpendicular magnetic anisotropy and domain wall velocity in Pt/Co/Pt by voltage-induced strain
The perpendicular magnetic anisotropy Keff, magnetization reversal, and field-driven domain wall velocity in the creep regime are modified in Pt/Co(0.85–1.0 nm)/Pt thin films by strain applied via piezoelectric transducers. Keff, measured by the extraordinary Hall effect, is reduced by 10 kJ/m3 by t...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Published: |
Nature Publishing Group
2015
|
| Online Access: | https://eprints.nottingham.ac.uk/34709/ |
| _version_ | 1848794917416992768 |
|---|---|
| author | Shepley, P.M. Rushforth, A.W. Wang, M. Burnell, G. Moore, T.A. |
| author_facet | Shepley, P.M. Rushforth, A.W. Wang, M. Burnell, G. Moore, T.A. |
| author_sort | Shepley, P.M. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The perpendicular magnetic anisotropy Keff, magnetization reversal, and field-driven domain wall velocity in the creep regime are modified in Pt/Co(0.85–1.0 nm)/Pt thin films by strain applied via piezoelectric transducers. Keff, measured by the extraordinary Hall effect, is reduced by 10 kJ/m3 by tensile strain out-of-plane ez5931024, independently of the film thickness, indicating a dominant volume contribution to the magnetostriction. The same strain reduces the coercive field by 2–4 Oe, and increases the domain wall velocity measured by wide-field Kerr microscopy by 30-100%, with larger changes observed for thicker Co layers. We consider how strain-induced changes in the perpendicular magnetic anisotropy can modify the coercive field and domain wall velocity. |
| first_indexed | 2025-11-14T19:23:48Z |
| format | Article |
| id | nottingham-34709 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:23:48Z |
| publishDate | 2015 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-347092020-05-04T17:00:32Z https://eprints.nottingham.ac.uk/34709/ Modification of perpendicular magnetic anisotropy and domain wall velocity in Pt/Co/Pt by voltage-induced strain Shepley, P.M. Rushforth, A.W. Wang, M. Burnell, G. Moore, T.A. The perpendicular magnetic anisotropy Keff, magnetization reversal, and field-driven domain wall velocity in the creep regime are modified in Pt/Co(0.85–1.0 nm)/Pt thin films by strain applied via piezoelectric transducers. Keff, measured by the extraordinary Hall effect, is reduced by 10 kJ/m3 by tensile strain out-of-plane ez5931024, independently of the film thickness, indicating a dominant volume contribution to the magnetostriction. The same strain reduces the coercive field by 2–4 Oe, and increases the domain wall velocity measured by wide-field Kerr microscopy by 30-100%, with larger changes observed for thicker Co layers. We consider how strain-induced changes in the perpendicular magnetic anisotropy can modify the coercive field and domain wall velocity. Nature Publishing Group 2015-01-21 Article PeerReviewed Shepley, P.M., Rushforth, A.W., Wang, M., Burnell, G. and Moore, T.A. (2015) Modification of perpendicular magnetic anisotropy and domain wall velocity in Pt/Co/Pt by voltage-induced strain. Scientific Reports, 5 . 7921/1-7921/5. ISSN 2045-2322 http://dx.doi.org/10.1038/srep07921 doi:10.1038/srep07921 doi:10.1038/srep07921 |
| spellingShingle | Shepley, P.M. Rushforth, A.W. Wang, M. Burnell, G. Moore, T.A. Modification of perpendicular magnetic anisotropy and domain wall velocity in Pt/Co/Pt by voltage-induced strain |
| title | Modification of perpendicular magnetic anisotropy and domain wall velocity in Pt/Co/Pt by voltage-induced strain |
| title_full | Modification of perpendicular magnetic anisotropy and domain wall velocity in Pt/Co/Pt by voltage-induced strain |
| title_fullStr | Modification of perpendicular magnetic anisotropy and domain wall velocity in Pt/Co/Pt by voltage-induced strain |
| title_full_unstemmed | Modification of perpendicular magnetic anisotropy and domain wall velocity in Pt/Co/Pt by voltage-induced strain |
| title_short | Modification of perpendicular magnetic anisotropy and domain wall velocity in Pt/Co/Pt by voltage-induced strain |
| title_sort | modification of perpendicular magnetic anisotropy and domain wall velocity in pt/co/pt by voltage-induced strain |
| url | https://eprints.nottingham.ac.uk/34709/ https://eprints.nottingham.ac.uk/34709/ https://eprints.nottingham.ac.uk/34709/ |