Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
81 (2002), S. 1282-1284
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We have experimentally determined the inductance Lsq, transfer function VΦ, and flux noise SΦ of several dc-superconducting quantum interference devices (SQUIDs) of increasing loop size (without an input flux transformer) in open-loop mode. Our primary aim was to provide reliable inductance data to aid in the design of high temperature superconducting magnetometers. Flux was induced by current injection directly into the SQUID loop. The inductances were compared with theoretical values. Correlations between the inductance data and measured values of VΦ and SΦ were obtained. Guidelines for optimization of magnetometer SQUIDs were established; the importance of achieving large VΦ together with a relatively small Lsq was demonstrated, and an order-of-magnitude reduction in noise was achieved by subjecting one of the SQUIDs to an in-house "ion-beam trimming" process. © 2002 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1500780
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