High-{Tc} rf SQUID magnetometers

Conference · Sat Dec 31 00:00:00 EST 1994

OSTI ID:64687

Mueck, M ^[1]

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1. Forschungszentrum Juelich GmbH (Germany). Inst. fuer Schicht- und Ionentechnik

The discovery of high temperature superconductors has revived the interest in rf SQUIDS, which, in the case of conventional superconductors had been surpassed in performance by the dc SQUID. Several advantages are offered by the rf SQUID, like the requirement for only a single weak link and a low 1/f noise. With high bias frequencies (> 100 MHz) it is possible to obtain flux noise values comparable to dc SQUIDS. At present, HTS rf SQUIDs offer a field sensitivity of less than 100 fT/{radical}Hz ({at} 1 Hz). This is already sufficient for a number of serious applications. This paper reviews recent developments towards practical rf SQUIDs made of high-{Tc} superconductors.

• OSTI ID: 64687
• Report Number(s): CONF-940142-; ISBN 0-8194-1455-7; TRN: IM9528%%347
• Resource Relation: Conference: OE/LASE `94: conference on optics, electro-optics, and laser applications in science and engineering, Los Angeles, CA (United States), 22-29 Jan 1994; Other Information: PBD: 1994; Related Information: Is Part Of Superconductive devices and circuits. Proceedings SPIE Volume 2160; Buhrman, R.A.; Clarke, J.; Daly, K.; Koch, R.H.; Luine, J.A.; Simon, R.W. [eds.]; PB: 272 p.
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
SQUID DEVICES
SENSITIVITY
HIGH-TC SUPERCONDUCTORS
ENERGY RESOLUTION
NOISE
PERFORMANCE