Physics – Condensed Matter – Materials Science
Scientific paper
2007-02-27
Phys. Rev. Lett. 99, 217208 (2007)
Physics
Condensed Matter
Materials Science
4 pages, 2 figures, published in Phys. Rev. Lett., changes to manuscript following referees' reports (mostly experimental deta
Scientific paper
10.1103/PhysRevLett.99.217208
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, $\alpha$.
Baltz Vincent
Cormier M.
Dieny Bernard
Ferre Jacques
Jamet J.-P.
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