Creep and flow regimes of magnetic domain wall motion in ultrathin Pt/Co/Pt films with perpendicular anisotropy

Abstract

We report on magnetic domain wall velocity measurements in ultrathin Pt/Co(0.5-0.8 nm)/Pt films with perpendicular anisotropy over a large range of applied magnetic fields. The complete velocity-field characteristics are obtained, enabling an examination of the transition between thermally activated creep and viscous flow: motion regimes predicted from general theories for driven elastic interfaces in weakly disordered media. The dissipation limited flow regime is found to be consistent with precessional domain wall motion, analysis of which yields values for the damping parameter, $\alpha$.

4 pages, 2 figures, published in Phys. Rev. Lett., changes to manuscript following referees' reports (mostly experimental details or regarding clarity), current version consistent with version in PRL

References in corpus (1)

• Creep motion of an elastic string in a random potential

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