A Hybrid SQUID Gradiometer with 3-Dimensional Thin-Film Pick-Up Coils Fabricated Using an Excimer Laser

Keiji Tsukada, Takanori Komuro, Masanori Higuchi, Akira Adachi, Hisashi Kado

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2 Citations (Scopus)


A compact hybrid superconducting quantum interference device (SQUID) gradiometer consisting of a coaxial pick-up coil with a superconducting Nb thin-film and a square double-washer dc-SQUID is developed. To make the pick-up coils, a 3-dimensional thin-film patterning technique is developed using an excimer laser. The gradiometer operates with flux locked loop electronics, a low-noise amplifier, and a high-speed (1 MHz) phase-sensitive detector. This gradiometer is sensitive to levels as low as 9 fT âœHz.

Original languageEnglish
Pages (from-to)19-21
Number of pages3
JournalIEEE Electron Device Letters
Issue number1
Publication statusPublished - 1994
Externally publishedYes


ASJC Scopus subject areas

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

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