Periodic magnetic domain wall pinning in an ultrathin film with perpendicular anisotropy generated by the stray magnetic field of a ferromagnetic nanodot array

Peter Metaxas; P.J. Zermatten; J.P. Jamet; J. Ferre; G. Gaudin; B. Rodmacq; A. Schuhl; Robert Stamps

doi:10.1063/1.3105988

Periodic magnetic domain wall pinning in an ultrathin film with perpendicular anisotropy generated by the stray magnetic field of a ferromagnetic nanodot array

Peter Metaxas, P.J. Zermatten, J.P. Jamet, J. Ferre, G. Gaudin, B. Rodmacq, A. Schuhl, Robert Stamps

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

The stray magnetic field of an array of hard ferromagnetic perpendicularly magnetized [Co/Pt]4 nanodots is used to nondestructively generate a periodic pinning potential for domain walls in an underlying [Pt/Co]2/Pt layer with perpendicular anisotropy. Pinning is evidenced using magneto-optical microscopy. The magnetic field (H) dependence of the average wall velocity in the presence of the periodic pinning potential is consistent with thermally activated creep, modified only by the addition of a uniform retarding field Hret, whose magnitude depends on the relative alignment of H and the dots' magnetizations.

Original language	English
Pages (from-to)	Article number 132504, 3pp
Journal	Applied Physics Letters
Volume	94
Issue number	13
DOIs	https://doi.org/10.1063/1.3105988
Publication status	Published - 2009

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title = "Periodic magnetic domain wall pinning in an ultrathin film with perpendicular anisotropy generated by the stray magnetic field of a ferromagnetic nanodot array",

abstract = "The stray magnetic field of an array of hard ferromagnetic perpendicularly magnetized [Co/Pt]4 nanodots is used to nondestructively generate a periodic pinning potential for domain walls in an underlying [Pt/Co]2/Pt layer with perpendicular anisotropy. Pinning is evidenced using magneto-optical microscopy. The magnetic field (H) dependence of the average wall velocity in the presence of the periodic pinning potential is consistent with thermally activated creep, modified only by the addition of a uniform retarding field Hret, whose magnitude depends on the relative alignment of H and the dots' magnetizations.",

author = "Peter Metaxas and P.J. Zermatten and J.P. Jamet and J. Ferre and G. Gaudin and B. Rodmacq and A. Schuhl and Robert Stamps",

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T1 - Periodic magnetic domain wall pinning in an ultrathin film with perpendicular anisotropy generated by the stray magnetic field of a ferromagnetic nanodot array

AU - Metaxas, Peter

AU - Zermatten, P.J.

AU - Jamet, J.P.

AU - Ferre, J.

AU - Gaudin, G.

AU - Rodmacq, B.

AU - Schuhl, A.

AU - Stamps, Robert

PY - 2009

Y1 - 2009

N2 - The stray magnetic field of an array of hard ferromagnetic perpendicularly magnetized [Co/Pt]4 nanodots is used to nondestructively generate a periodic pinning potential for domain walls in an underlying [Pt/Co]2/Pt layer with perpendicular anisotropy. Pinning is evidenced using magneto-optical microscopy. The magnetic field (H) dependence of the average wall velocity in the presence of the periodic pinning potential is consistent with thermally activated creep, modified only by the addition of a uniform retarding field Hret, whose magnitude depends on the relative alignment of H and the dots' magnetizations.

AB - The stray magnetic field of an array of hard ferromagnetic perpendicularly magnetized [Co/Pt]4 nanodots is used to nondestructively generate a periodic pinning potential for domain walls in an underlying [Pt/Co]2/Pt layer with perpendicular anisotropy. Pinning is evidenced using magneto-optical microscopy. The magnetic field (H) dependence of the average wall velocity in the presence of the periodic pinning potential is consistent with thermally activated creep, modified only by the addition of a uniform retarding field Hret, whose magnitude depends on the relative alignment of H and the dots' magnetizations.

U2 - 10.1063/1.3105988

DO - 10.1063/1.3105988

M3 - Article

VL - 94

SP - Article number 132504, 3pp

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 13

ER -

Periodic magnetic domain wall pinning in an ultrathin film with perpendicular anisotropy generated by the stray magnetic field of a ferromagnetic nanodot array

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