By Topic

Fabrication and characterization of an integrated 9-channel Superconducting quantum interference device magnetometer array

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

7 Author(s)
Kawai, J. ; Appl. Electron. Lab., Kanazawa Inst. of Technol., Japan ; Shimozu, T. ; Kawabata, M. ; Uehara, G.
more authors

We have fabricated and characterized nine Superconducting Quantum Interference Device (SQUID) magnetometers, which were integrated on a single chip. The magnetometers are based on a directly-coupled multiloop SQUID with Nb/Al-AlOx/Nb junctions, and are arranged in a 3 × 3 matrix in the area of 10 mm × 10 mm. The diameter of the circular pick-up loop of each magnetometer is 2.5 mm and the distance between neighboring magnetometers is 2.75 mm. In the operation with a flux locked loop (FLL) with direct voltage readout, typical flux-locked noise level of less than 3×10-6 Φ0/√Hz in the white region were obtained with the magnetometer in a superconductive shield. From the calibration of the sensitivity, typical field noise was measured to be 7 fT/√Hz. In combination with a small cryostat, we expect that this magnetometer will be useful for multi-channel measurement of magnetic fields requiring highly spatial resolution in various applications.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:15 ,  Issue: 2 )