Journal of Industrial and Engineering Chemistry

  • Volume 53
  • /
  • Pages.416-424
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  • 2017
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  • 1226-086X(pISSN)
  • /
  • 1876-794X(eISSN)
The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Highly efficient current sensor built on a chip based on nanocrystalline NiFe/Cu/NiFe thin film

  • Kondalkar, Vijay V. (Microsystem Lab, Department of Electrical and Computer Engineering Ajou University) ;
  • Li, Xiang (Microsystem Lab, Department of Electrical and Computer Engineering Ajou University) ;
  • Yang, Sang Sik (Microsystem Lab, Department of Electrical and Computer Engineering Ajou University) ;
  • Lee, Keekeun (Microsystem Lab, Department of Electrical and Computer Engineering Ajou University)
  • Received : 2017.03.21
  • Accepted : 2017.05.13
  • Published : 2017.09.25
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Abstract

We discuss here the realization of a grand vision of a smart GMR device for an on-chip current sensor. The device was characterized to confirm a strong antiferromagnetic coupling and their contribution to giant magnetoresistance. To achieve high sensitivity, we explored different prototypes of device. The GMR sensor is well suited for current sensing as it possesses desired linearity and high sensitivity of $1.32{\Omega}\;Oe^{-1}$. The result reveals thickness and number of bilayers play an important role in the magnetization to stay aligned to the current channel. This study brings us a step closer to an ideal on-chip current sensor.

Keywords

Acknowledgement

Supported by : Korea Electrical Engineering & Science Research Institute

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  2. Development of chipless, wireless current sensor system based on giant magnetoimpedance magnetic sensor and surface acoustic wave transponder vol.8, pp.None, 2018, https://doi.org/10.1038/s41598-018-20867-3