title: Giant electrical modulation of magnetization in Co40Fe40B20/Pb(Mg1/3Nb2/3)0.7Ti0.3O3(011) heterostructure.
abstract: We report a giant electric-field control of magnetization (M) as well as magnetic anisotropy in a Co40Fe40B20(CoFeB)/Pb(Mg1/3Nb2/3)0.7Ti0.3O3(PMN-PT) structure at room temperature, in which a maximum relative magnetization change (ΔM/M) up to 83% with a 90° rotation of the easy axis under electric fields were observed by different magnetic measurement systems with in-situ electric fields. The mechanism for this giant magnetoelectric (ME) coupling can be understood as the combination of the ultra-high value of anisotropic in-plane piezoelectric coefficients of (011)-cut PMN-PT due to ferroelectric polarization reorientation and the perfect soft ferromagnetism without magnetocrystalline anisotropy of CoFeB film. Besides the giant electric-field control of magnetization and magnetic anisotropy, this work has also demonstrated the feasibility of reversible and deterministic magnetization reversal controlled by pulsed electric fields with the assistance of a weak magnetic field, which is important for realizing strain-mediated magnetoelectric random access memories.
authors.affiliation: 1] Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, P. R. China [2] College of Science, National University of Defense Technology, Changsha 410073, P. R. China.
authors.forename: Sen
authors.initials: S
authors.lastname: Zhang
authors.affiliation: 1] Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, P. R. China [2] Collaborative Innovation Center of Quantum Matter, Beijing 100084, P. R. China.
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Department of Physics, State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China.
authors.forename: Xia
authors.initials: X
authors.lastname: Xiao
authors.affiliation: Department of Physics, State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China.
authors.forename: Yizheng
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China.
authors.forename: Syed
authors.initials: S
authors.lastname: Rizwan
authors.affiliation: Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, P. R. China.
authors.forename: Lifeng
authors.initials: L
authors.lastname: Yang
authors.affiliation: Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, P. R. China.
authors.forename: Peisen
authors.initials: P
authors.lastname: Li
authors.affiliation: Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, P. R. China.
authors.forename: Jiawei
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, P. R. China.
authors.forename: Meihong
authors.initials: M
authors.lastname: Zhu
authors.affiliation: Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, P. R. China.
authors.forename: Huiyun
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Department of Physics, State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Jin
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China.
authors.forename: Xiufeng
authors.initials: X
authors.lastname: Han