期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 12, 页码 10855-10864出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b00284
关键词
electric-field modulation of magnetism; (Co/Pt)(3) multilayers; perpendicular magnetic anisotropy; interface magnetic anisotropy; spin reorientation transition; coexistence phase
资金
- 973 project of the Ministry of Science and Technology of China [2015CB921402, 2014CB921002]
- National Science Foundation of China [51572150, 11134007, 51522212]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDB07030200]
- Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, U.S. Department of Energy [DE-SC0008147]
We report electric-field control of magnetism of (Co/Pt)(3) multilayers involving perpendicular magnetic anisotropy with different Co-layer thicknesses grown on Pb(Mg,Nb)O-3-PbTiO3 (PMN-PT) FE substrates. For the first time, electric-field control of the interface magnetic anisotropy, which results in the spin reorientation transition, was demonstrated. The electric-field-induced changes of the bulk and interface magnetic anisotropies can be understood by considering the strain-induced change of magnetoelastic energy and weakening of Pt 5d-Co 3d hybridization, respectively. We also demonstrate the role of competition between the applied magnetic field and the electric field in determining the magnetization of the sample with the coexistence phase. Our results demonstrate electric-field control of magnetism by harnessing the strain-mediated coupling in multiferroic heterostructures with perpendicular magnetic anisotropy and are helpful for electric-field modulations of Dzyaloshinskii-Moriya interaction and Rashba effect at interfaces to engineer new functionalities.
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