Probes for scanning SQUID magnetometers

Details Probes for scanning SQUID magnetometers Probes for scanning SQUID magnetometers

1994-08-30

1996-06-04

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Magnetometers

324201, 505846, 327527, G01R 33035, G01R 3316, H01L 3922

Patent

active

055236863

ABSTRACT:
Improved probes for miniaturized scanning magnetometers (scanning microscopes), particularly those utilizing superconducting quantum interference devices (SQUIDs), are provided by the invention. The improved probes can have sub-.mu.m.sup.2 effective pickup loop areas and enhanced shielding through the use of progressively wider double groundplane structures which result in improved probes having high spatial resolution.

REFERENCES:
patent: 4224630 (1980-09-01), Kroger
patent: 4320341 (1982-03-01), Lutes
patent: 4554567 (1985-11-01), Jillie et al.
patent: 4588947 (1986-05-01), Ketchen
patent: 5053834 (1991-10-01), Simmonds
patent: 5128297 (1993-06-01), Nakane et al.
patent: 5173660 (1992-12-01), Marsden
Scientific American Aug. 1994 pp. 46-53 "SQUIDs" John Clarke.
J. Appl. Phys 58 (11) Dec. 1, 1985 pp. 4322-4325 M. B. Ketchen "Design of improved integrated thin-film planar dc SQUID gradiometers".
J. Appl. Phys 59 (20) Nov. 11, 1991 pp. 2609-2611 M. B. Ketchen et al "Sub-.mu.m, planarized, Nb-AIO.sub.x -Nb Josephson process for 125 mm . . . ".
IBM Tech. Disc. Bulletin V.27 #10A Mar. 1985 pp. 5847-5847 Bermon et al "Integrated Thin-Film Miniature SQUID Magnetometer".

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