Creep and Flow Regimes of Magnetic Domain-Wall Motion in Ultrathin Pt/Co/Pt Films with Perpendicular Anisotropy

Peter Metaxas; J.P. Jamet; A. Mougin; M. Cormier; J. Ferre; V. Baltz; B. Rodmacq; B. Dieny; Robert Stamps

doi:10.1103/PhysRevLett.99.217208

Creep and Flow Regimes of Magnetic Domain-Wall Motion in Ultrathin Pt/Co/Pt Films with Perpendicular Anisotropy

Peter Metaxas, J.P. Jamet, A. Mougin, M. Cormier, J. Ferre, V. Baltz, B. Rodmacq, B. Dieny, Robert Stamps

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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
Pages (from-to)	online - approx 5-20pp
Journal	Physical Review Letters
Volume	99
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.99.217208
Publication status	Published - 2007

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title = "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.",

author = "Peter Metaxas and J.P. Jamet and A. Mougin and M. Cormier and J. Ferre and V. Baltz and B. Rodmacq and B. Dieny and Robert Stamps",

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AU - Metaxas, Peter

AU - Jamet, J.P.

AU - Mougin, A.

AU - Cormier, M.

AU - Ferre, J.

AU - Baltz, V.

AU - Rodmacq, B.

AU - Dieny, B.

AU - Stamps, Robert

PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevLett.99.217208

DO - 10.1103/PhysRevLett.99.217208

M3 - Article

C2 - 18233251

VL - 99

SP - online - approx 5-20pp

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 21

ER -