Progress in high tc superconducting quantum interference device (SQUID) magnetometer

Keiji Enpuku, Tadashi Minotani

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Recent progresses in high Tc superconducting quantum interference device (SQUID) magnetometers are discussed. First, intrinsic sensitivity of the SQUID at T = 77 K is discussed. For this purpose, transport and noise properties of the bicrystal junction are clarified, and optimization of junction parameters is shown. We also discuss the quality of the SQUID from a comprehensive comparison between experiment and simulation of the SQUID characteristics. Next, we discuss issues to guarantee correct operation of the SQUID magnetometer in noisy environment, such as a method to avoid flux trapping due to earth magnetic field, high-bandwidth electronics and gradiometer. Finally, we briefly describe application fields of the high Tc magnetometer.

Original languageEnglish
Pages (from-to)34-43
Number of pages10
JournalIEICE Transactions on Electronics
Issue number1
Publication statusPublished - Jan 1 2000

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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