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- Title
Giant electrical modulation of magnetization in Co<sub>40</sub>Fe<sub>40</sub>B<sub>20</sub>/ Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)<sub>0.7</sub>Ti<sub>0.3</sub>O<sub>3</sub>(011) heterostructure.
- Authors
Sen Zhang; Yonggang Zhao; Xia Xiao; Yizheng Wu; Syed Rizwan; Lifeng Yang; Peisen Li; Jiawei Wang; Meihong Zhu; Huiyun Zhang; Xiaofeng Jin; Xiufeng Han
- 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 (DM/M) up to 83% with a 906 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.
- Subjects
ELECTRONIC modulation; MAGNETIZATION; HETEROSTRUCTURES; ELECTRIC fields; MAGNETIC anisotropy; MAGNETIC measurements; FERROMAGNETISM
- Publication
Scientific Reports, 2014, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep03727