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The perpendicular magnetic anisotropy K$_e$$_f$$_f$, magnetization reversal,and field-driven domain wall velocity in the creep regime are modified inPt/Co(0.85-1.0 nm)/Pt thin films by strain applied via piezoelectrictransducers. K$_e$$_f$$_f$, measured by the extraordinary Hall effect, isreduced by 10 kJ/m$^3$ by tensile strain out-of-plane {\epsilon}$_z$ = 9 x10-4, independently of the film thickness, indicating a dominant volumecontribution to the magnetostriction. The same strain reduces the coercivefield by 2-4 Oe, and increases the domain wall velocity measured by wide-fieldKerr microscopy by 30-100 %, with larger changes observed for thicker Colayers. We consider how strain-induced changes in the perpendicular magneticanisotropy can modify the coercive field and domain wall velocity.

Modification of perpendicular magnetic anisotropy and domain wall velocity in Pt/Co/Pt by voltage-induced strain