Sensors (Jun 2014)

A Magnetic Sensor with Amorphous Wire

  • Dongfeng He,
  • Mitsuharu Shiwa

DOI
https://doi.org/10.3390/s140610644
Journal volume & issue
Vol. 14, no. 6
pp. 10644 – 10649

Abstract

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Using a FeCoSiB amorphous wire and a coil wrapped around it, we have developed a sensitive magnetic sensor. When a 5 mm long amorphous wire with the diameter of 0.1 mm was used, the magnetic field noise spectrum of the sensor was about 30 pT/ÖHz above 30 Hz. To show the sensitivity and the spatial resolution, the magnetic field of a thousand Japanese yen was scanned with the magnetic sensor.

Keywords