TY - JOUR
T1 - Gilbert damping in Ni/Co multilayer films exhibiting large perpendicular anisotropy
AU - Mizukami, Shigemi
AU - Zhang, Xianmin
AU - Kubota, Takahide
AU - Naganuma, Hiroshi
AU - Oogane, Mikihiko
AU - Ando, Yasuo
AU - Miyazaki, Terunobu
PY - 2011/1
Y1 - 2011/1
N2 - 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.
AB - 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.
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U2 - 10.1143/APEX.4.013005
DO - 10.1143/APEX.4.013005
M3 - Article
AN - SCOPUS:79251557173
VL - 4
JO - Applied Physics Express
JF - Applied Physics Express
SN - 1882-0778
IS - 1
M1 - 013005
ER -