@article{oai:nagoya.repo.nii.ac.jp:02002937,
 author = {Sakoguchi, A. and Oshima, D. and Iwata, S. and Kato, T.},
 issue = {2},
 journal = {IEEE Transactions on Magnetics},
 month = {Feb},
 note = {Electric field modulations of the perpendicular magnetic anisotropy (PMA) and magnetization dynamics of MgO/Co/Pt trilayers were measured by time-resolved magneto-optical Kerr effect (TRMOKE). The anisotropy field estimated from the anomalous Hall effect applying a field along in-plane was confirmed to be modified by the electric field, which results in the PMA variation with an electric field of −32 fJ/( V⋅m ). The PMA variation was also confirmed from TRMOKE measurements, which was estimated to be −47 fJ/( V⋅m ). From TRMOKE measurements, we also observed the reduction of the inverse of relaxation time 1/ τ of the magnetization precession with increasing the electric field. The 1/ τ was analyzed by assuming the contributions of effective Gilbert damping α_eff , anisotropy distribution, anisotropy angle distribution, and two magnon scattering, and we found α_eff decreased with increasing the electric field whose modulation was −0.0046 nm/V, corresponding to −13% per 1 V/nm. These results are similar to the electric field effect in (001)-orientated MgO/CoFeB/Ta trilayers, however, our finding indicates similar PMA and α modulations are found in MgO/Co/Pt trilayers having MgO(111)/fcc-Co interface.},
 pages = {1--5},
 title = {Electric-Field Modulation of Perpendicular Magnetic Anisotropy and Damping Constant in MgO/Co/Pt Trilayers},
 volume = {58},
 year = {2022}
}