SQUID magnetometer utilizing normal pickup coil and resonant-type coupling circuit

Tong Qing Yang, Keiji Enpuku

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)


We have developed a high Tc superconducting quantum interference device (SQUID) magnetometer utilizing a Cu pickup coil cooled to T = 77 K and a resonant-type coupling circuit. The thermal noise can be decreased by cooling the pickup coil, while the signal transferred to the SQUID can be increased by using the resonant-type coupling circuit. Four pickup coils with different radii were used in the experiment. For the pickup coil with a radius r = 15 mm and the number of turns n = 150, we obtained the magnetic field noise of SB1/2 = 26 fT/Hz1/2 at the resonant frequency of fr = 6.37 kHz.

Original languageEnglish
Pages (from-to)1396-1400
Number of pages5
JournalPhysica C: Superconductivity and its applications
Issue numberPART 2
Publication statusPublished - Oct 2003
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: Nov 11 2002Nov 13 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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