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 journalArticle

1 Citation (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

Fingerprint

Magnetometers
inductance
Inductance
low noise
magnetometers
Superconducting materials
critical temperature
coils
Modulation
modulation
Magnetic fields
White noise
white noise
magnetic fields
Temperature
wire
Wire
Electric potential
electric potential

All Science Journal Classification (ASJC) codes

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

Cite this

Low-noise magnetometer based on inductance modulation in high-critical-temperature superconductor coil. / Enpuku, Keiji; Matsuo, Masaaki; Yoshida, Yujiro; Yamashita, Shigeya; Sasayama, Teruyoshi; Yoshida, Takashi.

In: Japanese Journal of Applied Physics, Vol. 57, No. 6, 060314, 06.2018.

Research output: Contribution to journalArticle

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