Long baseline hardware gradiometer based on HTS rf-SQUIDs with substrate resonators

Author

Panaitov, Grigory I. ; Zhang, Yi ; Krause, Hans-Joachim ; Schubert, Jürgen ; Banzet, Marko

Author_Institution

Res. Center Julich GmbH, Inst. of Thin Films & Interfaces, Julich, Germany

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

841

Lastpage

844

Abstract

We have developed an asymmetric thin film first order gradiometer based on an HTS rf-SQUID. A coupling scheme uses an SrTiO₃ substrate resonator as an rf-tank circuit which simplifies the gradiometer balancing. Advantage of the technique is that gradiometers with very long baseline can be fabricated. The performance of 13 mm and 33 mm baseline SQUID gradiometers is presented. The gradiometers have been successfully used in applications for nondestructive evaluation of materials.

Keywords

SQUID magnetometers; high-temperature superconductors; superconducting resonators; superconducting thin films; 13 mm; 33 mm; HTS RF-SQUID; RF tank circuit; SrTiO₃; SrTiO₃ substrate resonator; asymmetric thin film first-order gradiometer; balancing technique; long-baseline hardware gradiometer; nondestructive evaluation; Coils; Hardware; High temperature superconductors; Inductance; Magnetic noise; Magnetic shielding; SQUID magnetometers; Substrates; Superconducting device noise; Working environment noise;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.814063

Filename

1211735