A device with two orthogonal low-Tc SQUID gradiometers - A comparison of series and parallel gradiometric SQUID's

K. Yokosawa, D. Suzuki, Keiji Tsukada, A. Tsukamoto

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We have developed a planar gradiometric device with two orthogonal SQUID gradiometers integrated on a substrate. In developing this new device, both series- and parallel-type gradiometric SQUID's (without pickup coils) suitable for the same pickup coils were fabricated. The parasitic inductance, parasitic areas, and cross talks of each SQUID were evaluated to compare their performances. Next, to evaluate the effects of changing field on the SQUID's, the critical current reduction and noise increase under an applied magnetic field were measured. These results show that the parallel SQUID is superior to the series SQUID; thus the parallel SQUID was chosen for use in the new single-chip gradiometric device.

Original languageEnglish
Pages (from-to)727-730
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume13
Issue number2 I
DOIs
Publication statusPublished - Jun 2003
Externally publishedYes

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gradiometers
SQUIDs
coils
sensors
Pickups
inductance
critical current
chips
magnetic fields
Critical currents
Inductance
Magnetic fields
Substrates

Keywords

  • Gradiometer
  • Orthogonal
  • Planar
  • SQUID

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

A device with two orthogonal low-Tc SQUID gradiometers - A comparison of series and parallel gradiometric SQUID's. / Yokosawa, K.; Suzuki, D.; Tsukada, Keiji; Tsukamoto, A.

In: IEEE Transactions on Applied Superconductivity, Vol. 13, No. 2 I, 06.2003, p. 727-730.

Research output: Contribution to journalArticle

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