NDLI: Magnetic microscopy using SQUIDs

Content Provider	IEEE Xplore Digital Library
Author	Wellstood, F.C. Gim, Y. Amar, A. Black, R.C. Mathai, A.
Copyright Year	2002
Abstract	SQUID-based magnetic microscopy involves scanning a sample closely past a low-noise SQUID. With the SQUID held in a flux-locked loop, a computer records the feedback output as a function of sample position and converts the resulting data into a false color image of magnetic field strength. Present systems have achieved spatial resolution down to about 5 /spl mu/m and flux resolution down to about 1 /spl mu//spl Phi//sub 0//Hz/sup 1/2/. They have been used to study the pairing symmetry of the high-T/sub c/ superconductors, for high-frequency imaging, and for a variety of applications related studies. Recently, microscopes have also been developed for high resolution magnetic imaging of room-temperature samples. We briefly describe the design, operation, and capabilities of these systems.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3134
Ending Page	3138
Page Count	5
File Size	1275213
File Format	PDF
ISSN	10518223
Volume Number	7
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Micromagnetics SQUIDs Spatial resolution High-resolution imaging Output feedback Feedback loop Image converters Color Magnetic fields Superconductivity
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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