Integrated LTS gradiometer SQUID systems for measuring of magnetic field distributions in an unshielded environment

Author

Weber, P. ; Zakosarenko, V.M. ; Berthel, K.-H. ; Bluthner, K. ; Schambach, J. ; Warzemann, L. ; Kirsch, G. ; Dohler, T. ; Stolz, R.

Author_Institution

Inst. of Solid State Phys., Friedrich-Schiller-Univ., Jena, Germany

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

2493

Lastpage

2496

Abstract

Planar dc SQUID gradiometers with integrated antenna were designed for measurement of field distributions with gradients much smaller than 1 pT/cmHz/sup 1/2/ in an unshielded environment. Four types of first-order-gradiometer SQUIDs were fabricated in Nb-Pb technology and investigated. Their layouts are highly symmetrical and they can be made also with HTS materials. Further reduction of the effect of disturbances was achieved with a second order gradiometer realized electronically. The stable function of the systems under unshielded conditions is shown.<>

Keywords

Josephson effect; SQUID magnetometers; SQUIDs; lead; magnetic field measurement; magnetometers; niobium; niobium compounds; Nb-NbO-Pb; SQUID systems; first-order-gradiometer SQUIDs; integrated LTS gradiometer; integrated antenna; magnetic field distributions; second order gradiometer; unshielded environment; Antenna measurements; Chemical technology; High temperature superconductors; Inductance; Integrated circuit noise; Magnetic field measurement; Magnetic noise; SQUID magnetometers; Substrates; Superconducting device noise;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.403097

Filename

403097