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

doi:10.7567/JJAP.57.060314

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 journal › Article › peer-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 language	English
Article number	060314
Journal	Japanese journal of applied physics
Volume	57
Issue number	6
DOIs	https://doi.org/10.7567/JJAP.57.060314
Publication status	Published - Jun 2018

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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title = "Low-noise magnetometer based on inductance modulation in high-critical-temperature superconductor coil",

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.",

author = "Keiji Enpuku and Masaaki Matsuo and Yujiro Yoshida and Shigeya Yamashita and Teruyoshi Sasayama and Takashi Yoshida",

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T1 - Low-noise magnetometer based on inductance modulation in high-critical-temperature superconductor coil

AU - Enpuku, Keiji

AU - Matsuo, Masaaki

AU - Yoshida, Yujiro

AU - Yamashita, Shigeya

AU - Sasayama, Teruyoshi

AU - Yoshida, Takashi

PY - 2018/6

Y1 - 2018/6

N2 - 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.

AB - 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.

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