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Electric Field-Tunable Giant Magnetoresistance (GMR) Sensor with Enhanced Linear Range.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-02-06 , DOI: 10.1021/acsami.9b20038 Liqian Wang 1 , Zhongqiang Hu 1 , Yuanyuan Zhu 1 , Dan Xian 2, 3 , Jialin Cai 4 , Mengmeng Guan 1 , Chenying Wang 2, 3 , Junbao Duan 1 , Jingen Wu 1 , Zhiguang Wang 1 , Ziyao Zhou 1 , Zhuang-De Jiang 2, 3 , Zhongming Zeng 4 , Ming Liu 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-02-06 , DOI: 10.1021/acsami.9b20038 Liqian Wang 1 , Zhongqiang Hu 1 , Yuanyuan Zhu 1 , Dan Xian 2, 3 , Jialin Cai 4 , Mengmeng Guan 1 , Chenying Wang 2, 3 , Junbao Duan 1 , Jingen Wu 1 , Zhiguang Wang 1 , Ziyao Zhou 1 , Zhuang-De Jiang 2, 3 , Zhongming Zeng 4 , Ming Liu 1
Affiliation
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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.
中文翻译：
具有增强的线性范围的可电场调谐的巨磁阻（GMR）传感器。
巨磁阻（GMR）传感器的操作机制依赖于磁化方向对外部磁场的线性响应。由于铁磁层的磁各向异性可以通过应变介导的磁电耦合效应来控制，因此我们提出了可调谐的GMR磁场传感器设计，该设计允许对线性范围和灵敏度进行电压调整。在PMN-PT（011）基板上生长自旋阀结构Ru / CoFe / Cu / CoFe / IrMn / Ru，可以通过电场控制铁磁层的磁化方向。因此感应出可调节的线性磁阻。基于磁电耦合效应和自旋阀，我们制备了具有桥结构的可调谐GMR磁场传感器。通过施加14 kV / cm的电场，直流磁场的线性感应范围提高了6倍。电可调GMR传感器满足在相同配置下在不同磁场范围内工作的要求，因此在物联网中具有广阔的应用潜力。
更新日期：2020-02-06
中文翻译：
具有增强的线性范围的可电场调谐的巨磁阻（GMR）传感器。
巨磁阻（GMR）传感器的操作机制依赖于磁化方向对外部磁场的线性响应。由于铁磁层的磁各向异性可以通过应变介导的磁电耦合效应来控制，因此我们提出了可调谐的GMR磁场传感器设计，该设计允许对线性范围和灵敏度进行电压调整。在PMN-PT（011）基板上生长自旋阀结构Ru / CoFe / Cu / CoFe / IrMn / Ru，可以通过电场控制铁磁层的磁化方向。因此感应出可调节的线性磁阻。基于磁电耦合效应和自旋阀，我们制备了具有桥结构的可调谐GMR磁场传感器。通过施加14 kV / cm的电场，直流磁场的线性感应范围提高了6倍。电可调GMR传感器满足在相同配置下在不同磁场范围内工作的要求，因此在物联网中具有广阔的应用潜力。
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