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Local anisotropy control of Pt/Co/Ir thin film with perpendicular magnetic anisotropy by surface acoustic waves - dataset

Shuai, Jintao and Ali, Mannan and Lopez-Diaz, Luis and Cunningham, John E and Moore, Thomas A (2022) Local anisotropy control of Pt/Co/Ir thin film with perpendicular magnetic anisotropy by surface acoustic waves - dataset. University of Leeds. [Dataset] https://doi.org/10.5518/1169

Dataset description

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 +/- 0.03 to 3.80 +/- 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 +/- 3 to up to 2100 +/- 80 square micrometers/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.

Subjects: F000 - Physical sciences > F300 - Physics
Divisions: Faculty of Engineering > School of Electronic and Electrical Engineering > Pollard Institute
Faculty of Mathematics and Physical Sciences > School of Physics and Astronomy
Related resources:
LocationType
https://doi.org/10.1063/5.0097172Publication
https://eprints.whiterose.ac.uk/188000/Publication
License: Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited: 19 Jul 2022 16:31
URI: http://archive.researchdata.leeds.ac.uk/id/eprint/1001

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