Integrated high-T/sub c/ SQUID magnetometer
David, B.; Grundler, D.; Krumme, J.-P.; Doessel, O.
1995

Abstract

We have fabricated an integrated SQUID magnetometer based on Y/sub 1/Ba/sub 2/Cu/sub 3/O/sub 7/ step-edge Josephson junctions. A tight coupling between the input coil and the SQUID washer has been achieved with a coupling coefficient K of 0.9. Noise measurements on our SQUIDs showed a nearly frequency independent flux noise of 50 /spl mu//spl Phi//sub 0///spl radic/Hz at 77 K. 1/f-noise contributions at lower temperatures were always completely suppressed by bias reversal. From our measurements of the field sensitivity and the flux noise we can estimate a field resolution of the magnetometer of 60 fT//spl radic/Hz down to 1 Hz.textlesstextgreater

Details

Title Integrated high-T/sub c/ SQUID magnetometer
Author(s) David, B. ; Grundler, D. ; Krumme, J.-P. ; Doessel, O.
Published in IEEE Transactions on Applied Superconductivity
Volume 5
Issue 2
Pages 2935-2938
Date 1995
ISSN 1051-8223
Keywords
DOI https://doi.org/10.1109/77.403207
Laboratories LMGN
Record Appears in Scientific production and competences > STI - School of Engineering > IMX - Institute of Materials > LMGN - Laboratory of Nanoscale Magnetic Materials and Magnonics
Peer-reviewed publications
Work outside EPFL
Journal Articles
Published
Record creation date 2015-07-07

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