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Strain and domain wall creep in Pt-Co-Ir thin films

Shepley, Philippa M. and Burnell, Gavin and Moore, Thomas A. (2018) Strain and domain wall creep in Pt-Co-Ir thin films. University of Leeds. [Dataset] https://doi.org/10.5518/410

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We study the energy and creep velocity of magnetic domain walls in perpendicularly magnetised Pt/Co/Ir thin films under strain. We find that the enhancement of domain wall creep velocity under strain from piezoelectric transducers is largest in films with the thinnest Co layers (0.56 nm), in which the strain causes the smallest relative change in perpendicular magnetic anisotropy and the largest relative change in domain wall creep velocity. We show how domain wall energy is predictive of the sensitivity of domain wall creep velocity to changes in strain, and thus provide a route to designing magnetic thin film systems for optimum strain control.

Keywords: magnetism, thin films, perpendicular magnetic anisotropy, strain, piezoelectric, domain wall, domain wall energy
Subjects: F000 - Physical sciences > F300 - Physics > F320 - Chemical physics > F321 - Solid-state physics
F000 - Physical sciences > F300 - Physics > F310 - Applied physics
Divisions: Faculty of Mathematics and Physical Sciences > School of Physics and Astronomy
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http://etheses.whiterose.ac.uk/11758/Publication
License: Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited: 28 Jun 2018 10:48
URI: https://archive.researchdata.leeds.ac.uk/id/eprint/383

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