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Fabrication of High-Temperature Squid Magnetometers

Correlations with Design and Performance

  • Chapter
SQUID Sensors: Fundamentals, Fabrication and Applications

Part of the book series: NATO ASI Series ((NSSE,volume 329))

Abstract

Fabrication of SQUID magnetometers from epitaxial thin films of high-temperature superconductors and multilayered film structures including perovskite insulator films is reviewed in this chapter. Emphasized are patterning and processing methods, fabrication of Josephson junctions having resistively-shunted current-voltage characteristics, attained reproducibility and spreads of junction critical current and normal resistance. Subsequently, guidelines are given for designing and fabricating single and multilayered SQUID sensor structures, especially flux transformers and multiloop SQUIDs. Included are correlations with attained performance characteristics of magnetometers: their effective area, white and low-frequency flux noise, and the resulting magnetic field resolution at high and low signal frequencies. Additionally described are alternative planar rf SQUID tank-circuit resonators and the resulting properties of rf SQUIDs.

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  1. Institut für Schicht- und Ionentechnik (ISI), Forschungszentrum Jülich (KFA), D-52425, Jülich, Germany

    A. I. Braginski

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  1. Air Force Office of Scientific Research, Washington, DC, USA

    Harold Weinstock

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Braginski, A.I. (1996). Fabrication of High-Temperature Squid Magnetometers. In: Weinstock, H. (eds) SQUID Sensors: Fundamentals, Fabrication and Applications. NATO ASI Series, vol 329. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5674-5_5

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