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.
Original language | English |
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Pages (from-to) | online - approx 5-20pp |
Journal | Physical Review Letters |
Volume | 99 |
Issue number | 21 |
DOIs | |
Publication status | Published - 2007 |