Magnetometer exploiting inductance modulation in coils made of high-critical-temperature superconductor

Keiji Enpuku, Masaaki Matsuo, Teruyoshi Sasayama, Takashi Yoshida

研究成果: ジャーナルへの寄稿学術誌査読

4 被引用数 (Scopus)

抄録

We developed a magnetometer for measuring low-frequency magnetic fields. The magnetometer consists of two coils, namely, pickup and modulation coils made of high-critical-temperature superconducting material. The inductance of the modulation coil is modulated with time, and the magnetic field signal is converted to an amplitude-modulated voltage across the modulation coil. The prototype magnetometer can operate at low frequencies down to f = 0.01 Hz without diminishing the response. The noise in the magnetic field signal is 40 pT/Hz1/2 at 10 Hz. An order of magnitude improvement will be possible with a modulation coil of suitable geometry.

本文言語英語
論文番号113101
ジャーナルApplied Physics Express
10
11
DOI
出版ステータス出版済み - 11月 2017

!!!All Science Journal Classification (ASJC) codes

  • 工学(全般)
  • 物理学および天文学(全般)

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