Research Data Leeds Repository

Separation of heating and magnetoelastic coupling effects in surface-acoustic-wave-enhanced creep of magnetic domain walls

Shuai, Jintao and Hunt, Robbie G. and Cunningham, John E. and Moore, Thomas A. (2023) Separation of heating and magnetoelastic coupling effects in surface-acoustic-wave-enhanced creep of magnetic domain walls. University of Leeds. [Dataset] https://doi.org/10.5518/1336

Dataset description

Surface acoustic waves (SAWs) have significant potential for energy-efficient control of magnetic domain walls (DW) 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 was measured in-situ using an on-chip Pt film as a thermometer within the SAW beampath. The application of SAWs at a center frequency of 48 MHz and a total RF power of 21 dBm resulted 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 was evaluated separately using Kerr microscopy at various temperatures or in the presence of SAWs. With a 10K increase in temperature only, the DW velocity was found to increase from 33±3 µm/s (at room temperature) to 104±8 µm/s under an external magnetic field of 65 Oe. Travelling SAW-assisted DW velocity (116±3 µm/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±8 µm/s) in the presence of standing SAWs indicating that magnetoelastic coupling is more important than heating in this scenario.

Keywords:	Magnetism, Surface acoustic waves, Domain wall
Subjects:	F000 - Physical sciences > F300 - Physics
Divisions:	Faculty of Engineering and Physical Sciences > School of Physics and Astronomy Faculty of Engineering and Physical Sciences > School of Electronic and Electrical Engineering > Pollard Institute
Related resources:	Location Type https://doi.org/10.1103/PhysRevApplied.20.014002 Publication
License:	Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited:	07 Jul 2023 17:17
URI:	http://archive.researchdata.leeds.ac.uk/id/eprint/1129
Additional details Additional details Creators: Creators ORCID Other ID Email Primary affiliation Primary affiliation ID Primary affiliation ID type Secondary affiliation Secondary affiliation ID Secondary affiliation ID type Shuai, Jintao https://orcid.org/0000-0002-6114-6711 University of Leeds Hunt, Robbie G. https://orcid.org/0000-0001-7350-3571 University of Leeds Cunningham, John E. https://orcid.org/0000-0002-1805-9743 University of Leeds Moore, Thomas A. https://orcid.org/0000-0001-6443-2556 University of Leeds Type of data: Dataset Research funders: European Union, EPSRC Grant numbers: 860060, EP/V004743/1, EP/V004743/1, EP/V047914/1 Publication date: 2023 Resource language: English Publisher: University of Leeds Contact Email Address: T.A.Moore@leeds.ac.uk Last Modified: 07 Jul 2023 22:35

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Documentation

Readme_Shuai_2023.txt [1kB] Readme_Shuai_2023.txt [1kB] Readme_Shuai_2023.txt [1kB] Visible to: Anyone File name: Readme_Shuai_2023.txt Content type: Documentation Description: Documentation of the dataset Mime-Type: text/plain License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 1kB

Data

Domain_Wall_Velocity [254MB] Domain_Wall_Velocity [254MB] Domain_Wall_Velocity [254MB] Visible to: Anyone File name: Domain_Wall_Velocity.zip Content type: Data Description: Images used to determine the domain wall velocity in different conditions, including without surface-acoustic-wave (SAW) influence at various temperatures, as well as in the presence of standing or traveling SAWs. Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 254MB

Resistance_Measurements [667kB] Resistance_Measurements [667kB] Resistance_Measurements [667kB] Visible to: Anyone File name: Resistance_Measurements.zip Content type: Data Description: Resistance measurements of the Pt thermometers conducted at room temperature and inside the cryostat; Heating behavior of the thermometers, as well as the temperature changes with source frequency. Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 667kB

S-parameters [143kB] S-parameters [143kB] S-parameters [143kB] Visible to: Anyone File name: S-parameters.zip Content type: Data Description: S-parameters of the SAW devices used in the paper. Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 143kB