Gilbert damping in Ni/Co multilayer films exhibiting large perpendicular anisotropy

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Gilbert damping is reported in perpendicularly magnetized Ni/Co multilayer films with Pt buffer and capping layers, and investigated through the time-resolved magneto-optical Kerr effect under various applied magnetic field strengths and directions. Both damping constant a and perpendicular magnetic anisotropy energy Ku depend strongly on layer thickness and bilayer periodicity, and rise to approximately 0.08 and 8 Merg/cm3, respectively. The Gilbert damping rate depends linearly on inverse multilayer thickness, indicating that large damping in the Ni/Co multilayers stems from its interfaces in contact with the Pt layers.

Original languageEnglish
Article number013005
JournalApplied Physics Express
Issue number1
Publication statusPublished - 2011 Jan

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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