@article{oai:nagoya.repo.nii.ac.jp:00027073,
 author = {Otaki, Y. and Kato, T. and Okamoto, S. and Kikuchi, N. and Oshima, D. and Iwata, S. and Kitakami, O.},
 issue = {11},
 journal = {IEEE Transactions on Magnetics},
 month = {Nov},
 note = {[Co (0.29 nm)/Ni (0.71 nm)]10 multilayers were deposited on Ta (30nm) and Pt (30nm) buffer layers, and the variation of the magnetization dynamics by the adsorption of Fe3O4 nanoparticles was studied by vector network analyzer-ferromagnetic resonance method. The surface roughness of the Co/Ni multilayer was 0.52 nm, and significantly increased after the adsorption of the Fe3O4 nanoparticles which was captured by large field gradient on the demagnetized Co/Ni multilayer. The anisotropy field Hk, damping constant α, and anisotropy distribution AHk of the Co/Ni on Ta buffer layer were 2.6 kOe, 0.012, and 0.32 kOe, respectively. By adsorbing of the Fe3O4 nanoparticles, the stray field from the nanoparticles Hnp was applied to the Co/Ni, and Hk + Hnp was estimated to increase to 3.7 kOe. Moreover, α and AHk also increased to 0.020 and 0.42 kOe by the adsorption, respectively. Similarly, Hk + Hnp , α, AHk of Pt buffered Co/Ni also increased from 2.4 kOe, 0.033, 0.43 kOe to 4.2 kOe, 0.055, 0.53 kOe, respectively. These results suggest that the adsorption of Fe3O4 nanoparticles significantly modifies the magnetization dynamics of Co/Ni multilayer.},
 title = {Variation of Magnetization Dynamics of Co/Ni Multilayer by Capturing Magnetic Nanoparticles},
 volume = {54},
 year = {2018}
}