Shuai, J orcid.org/0000-0002-6114-6711, Hunt, R orcid.org/0000-0001-7350-3571, Moore, T orcid.org/0000-0001-6443-2556 et al. (1 more author) (2023) Separation of Heating and Magnetoelastic Coupling Effects in Surface-Acoustic-Wave-Enhanced Creep of Magnetic Domain Walls. Physical Review Applied, 20 (1). 014002. ISSN 2331-7019
Abstract
Surface acoustic waves (SAWs) have significant potential for energy-efficient control of magnetic domain walls (DWs) owing to the magnetoelastic coupling effect. However, the dissipation of radio-frequency (rf) power in a SAW device can result in heating, which can also affect the DW motion. In this work, the heating of a SAW device consisting of a Pt/Co/Ta thin film with perpendicular magnetic anisotropy in between two interdigitated transducers is measured in situ with use of an on-chip Pt film as a thermometer within the SAW beam path. The application of SAWs at a center frequency of 48 MHz and a total rf power of 21 dBm results in a temperature increase of approximately 10 K within the SAW beam path owing to rf-power dissipation. DW velocity in a Pt/Co/Ta thin film is evaluated separately with use of Kerr microscopy at various temperatures or in the presence of SAWs. With a 10-K increase in temperature only, the DW velocity is found to increase from 33±3μm/s (at room temperature) to 104±8μm/s under an external magnetic field of 65 Oe. Traveling-SAW-assisted DW velocity (116±3μm/s) is slightly higher than that with a 10-K temperature increase alone, suggesting that the heating plays the major role in promoting DW motion, whereas the DW motion is significantly enhanced (418±8μm/s) in the presence of standing SAWs, indicating that magnetoelastic coupling is more important than heating in this scenario.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
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 EPSRC (Engineering and Physical Sciences Research Council) EP/V047914/1 EPSRC (Engineering and Physical Sciences Research Council) EP/V004743/1 EU - European Union 860060 EPSRC (Engineering and Physical Sciences Research Council) EP/W028921/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 24 May 2023 12:28 |
Last Modified: | 06 Jul 2023 15:28 |
Status: | Published |
Publisher: | American Physical Society |
Identification Number: | 10.1103/PhysRevApplied.20.014002 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:199518 |