| Title | Voltage-Driven Nonlinearity in Magnetoelectric Heterostructures |
| Authors | Chu, Zhaoqiang Dong, Cunzheng Tu, Cheng He, Yifan Liang, Xianfeng Wang, Jiawei Wei, Yuyi Chen, Huaihao Gao, Xiangyu Lu, Caijiang Zhu, Zengtai Lin, Yuanhua Dong, Shuxiang McCord, Jeffrey Sun, Nian-Xiang |
| Affiliation | Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA Peking Univ, Coll Engn, Beijing 100871, Peoples R China Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 611731, Sichuan, Peoples R China Zhejiang Univ Technol, Coll Sci, Hangzhou 310023, Zhejiang, Peoples R China Tsinghua Univ, Sch Mat Sci & Engn, Beijing, Peoples R China Peking Univ, Beijing Key Lab Magnetoelect Mat & Devices BKL ME, Beijing 100871, Peoples R China Univ Kiel, Inst Mat Sci, Kaiserstr 2, D-24143 Kiel, Germany |
| Issue Date | 2019 |
| Publisher | PHYSICAL REVIEW APPLIED |
| Abstract | Magnetoelectric (ME) heterostructures are widely studied to realize functional applications, such as magnetometers, ME random access memory (MERAM), ME antennas, energy harvesters, and voltage microwave devices. A good understanding of the nonlinearity of ME heterostructures can lead to potentially improved performance. Here, we present an investigation into the voltage-driven nonlinear phenomena of a ME heterostructure near its electromechanical resonance. The Stoner-Wohlfarth model and Duffing equation are used to study the Delta E effect in amorphous Metglas alloy and the nonlinear behavior of a ME heterostructure, respectively. Then, the dependence of the nonlinearity on bias field, driving voltage, mechanical quality factor, and the frequency sweeping direction are systematically studied and verified. Experimental results show that spring-hardening and -softening behavior is separately obtained at bias fields of 25 Oe and 50 Oe, respectively. In addition, hysteresis is observed when sweeping the frequency forward and then backward at a driving voltage of 5 V; this agrees well with qualitative analysis. This work provides a route to induce, control, and possibly exploit the nonlinear behavior of ME devices, such as magnetic-field energy harvesters and ME sensors and antennas. |
| URI | http://hdl.handle.net/20.500.11897/544834 |
| ISSN | 2331-7019 |
| DOI | 10.1103/PhysRevApplied.12.044001 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 工学院 |
