journal article·2020-02-19

Electric Field-Tunable Giant Magnetoresistance (GMR) Sensor with Enhanced Linear Range

Liqian Wang, Zhongqiang Hu, Yuanyuan Zhu, Dan Xian, Jialin Cai, Mengmeng Guan, Chenying Wang, Junbao Duan, Jingen Wu, Zhiguang Wang, Ziyao Zhou, Zhuang-De Jiang, Zhongming Zeng, Ming Liu

Publisher page

Abstract

The operation mechanism of giant magnetoresistance (GMR) sensors relies on the linear response of the magnetization direction to an external magnetic field. Since the magnetic anisotropy of ferromagnetic layers can be manipulated by a strain-mediated magnetoelectric coupling effect, we propose a tunable GMR magnetic field sensor design that allows for voltage tuning of the linear range and sensitivity. A spin valve structure Ru/CoFe/Cu/CoFe/IrMn/Ru is grown on a PMN-PT (011) substrate, and the magnetization directions of ferromagnetic layers can be controlled by an electric field. An adjustable linear magnetoresistance is therefore induced. Based on the magnetoelectric coupling effect and spin valve, we prepared tunable GMR magnetic field sensors with bridge structures. The linear sensing range of a DC magnetic field is enhanced 6 times by applying an electric field of 14 kV/cm. The electrically tunable GMR sensor fulfills the requirements to work at different magnetic field ranges in the same configuration, therefore exhibiting great potential for applications in the Internet of things.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Multiferroics and related materials · Magnetic properties of thin films · ZnO doping and properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China

Collaborative Innovation Center of High-End Manufacturing Equipment, Xi’an Jiaotong University, Xi’an 710049, China

International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technology, Xi’an Jiaotong University, Xi’an 710049, China

Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, CAS, Suzhou, Jiangsu 215123, China

Funding

State Administration of Foreign Experts Affairs · Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China · National Key Laboratory of Science and Technology on Space Microwave · Shaanxi Province

References (27)

Show source-provided references
1. 10.1063/1.34825210.1063/1.348252 ↗
2. 10.1108/0260228981024059210.1108/02602289810240592 ↗
3. 10.1023/A:100993072445910.1023/A:1009930724459 ↗
4. 10.1146/annurev-matsci-070909-10445910.1146/annurev-matsci-070909-104459 ↗
5. 10.1063/1.489803910.1063/1.4898039 ↗
6. 10.1103/PhysRevLett.107.21720210.1103/PhysRevLett.107.217202 ↗
7. 10.1063/1.359779610.1063/1.3597796 ↗
8. 10.7567/APEX.7.04300210.7567/APEX.7.043002 ↗
9. 10.1002/adma.20130198910.1002/adma.201301989 ↗
10. 10.1063/1.335410410.1063/1.3354104 ↗
11. Tian H. F. · Appl. Phys. Lett. · 2008 · 92 · 759
12. 10.1063/1.500504910.1063/1.5005049 ↗
13. 10.1063/1.479581910.1063/1.4795819 ↗
14. 10.1038/nature0232510.1038/nature02325 ↗
15. 10.1002/adma.20140277410.1002/adma.201402774 ↗
16. 10.1002/aelm.20160018810.1002/aelm.201600188 ↗
17. 10.1038/nmat202410.1038/nmat2024 ↗
18. 10.1142/S201032471250006310.1142/S2010324712500063 ↗
19. 10.1063/1.494036010.1063/1.4940360 ↗
20. 10.1109/TIM.1977.431447610.1109/TIM.1977.4314476 ↗
21. 10.1016/j.jmmm.2012.01.03810.1016/j.jmmm.2012.01.038 ↗
22. 10.1109/20.48652010.1109/20.486520 ↗
23. 10.1063/1.342731110.1063/1.3427311 ↗
24. 10.1038/srep0890510.1038/srep08905 ↗
25. 10.1038/s41467-018-08061-510.1038/s41467-018-08061-5 ↗
26. 10.1126/science.aay722110.1126/science.aay7221 ↗
27. 10.1126/science.aaw278110.1126/science.aaw2781 ↗