Low-noise magnetometer based on inductance modulation in high-critical-temperature superconductor coil

Keiji Enpuku, Masaaki Matsuo, Yujiro Yoshida, Shigeya Yamashita, Teruyoshi Sasayama, Takashi Yoshida

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We developed a magnetometer based on inductance modulation of a coil made from a high-critical-temperature superconducting material. The coil inductance was modulated over time via a modulation current applied to a magnetic wire that was inserted into the coil. The magnetic field was then converted into a signal voltage using this time-dependent inductance. The relationship between magnetometer performance and the modulation current conditions was studied. Under appropriate conditions, the magnetometer had responsivity of 885 V/T. The magnetic field noise was 1.3 pT/Hz1/2 in the white noise region and 5.6 pT/Hz1/2 at f = 1 Hz.

Original languageEnglish
Article number060314
JournalJapanese journal of applied physics
Volume57
Issue number6
DOIs
Publication statusPublished - Jun 2018

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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