Shuai, J orcid.org/0000-0002-6114-6711, Ali, M orcid.org/0000-0002-7426-7731, Lopez-Diaz, L orcid.org/0000-0002-9773-1875 et al. (2 more authors) (2022) Local anisotropy control of Pt/Co/Ir thin film with perpendicular magnetic anisotropy by surface acoustic waves. Applied Physics Letters, 120 (25). 252402. ISSN 0003-6951
Abstract
The control of perpendicular magnetic anisotropy (PMA) in thin films by strain has considerable potential for energy-efficient information storage and data processing. Here, we report on the control of PMA in Pt/Co/Ir thin films by the strain produced by standing surface acoustic waves (SAWs). A significant (21%) coercivity reduction (from 4.80 6 0.03 to 3.80 6 0.02 mT) can be obtained by applying a standing SAW with a center frequency of 93.35 MHz. Furthermore, the standing SAWs induce a greater-than 11-fold increase in magnetization reversal speed (from 168 6 3 to up to 2100 6 80 lm2/s) at 3.2 mT for a total applied RF power of 22.5 dBm. During application of SAWs, wide-field Kerr microscopy reveals the formation of domains in stripes with a periodicity of half of the SAW wavelength. Micromagnetic simulations indicate that the anti-nodes of the standing SAW locally lower the anisotropy due to the magneto-elastic coupling effect, decreasing domain nucleation field while promoting magnetization reversal. Our study suggests the possibility of remote and energy-efficient control of magnetization switching using SAWs.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 Author(s). This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Jintao Shuai, Mannan Ali, Luis Lopez-Diaz, John E. Cunningham, and Thomas A. Moore , "Local anisotropy control of Pt/Co/Ir thin film with perpendicular magnetic anisotropy by surface acoustic waves", Appl. Phys. Lett. 120, 252402 (2022) https://doi.org/10.1063/5.0097172 and may be found at (https://aip.scitation.org/journal/apl). Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Condensed Matter (Leeds) |
Funding Information: | Funder Grant number EU - European Union 860060 EPSRC (Engineering and Physical Sciences Research Council) EP/V004743/1 EPSRC (Engineering and Physical Sciences Research Council) EP/M01598X/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Jun 2022 09:17 |
Last Modified: | 15 Jan 2025 14:53 |
Status: | Published |
Publisher: | American Institute of Physics |
Identification Number: | 10.1063/5.0097172 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:188000 |