High-T/sub c/ RF SQUID magnetometer system for high-resolution magnetic imaging

Author

Tinchev, S.S. ; Hinken, J.H. ; Stiller, M. ; Baranyak, A. ; Hartmann, D.

Author_Institution

Forschungsgesellschaft fur Inf. mbH, Bad Salzdetfurth, Germany

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

2469

Lastpage

2471

Abstract

A high-T/sub c/ RF superconducting quantum interference device (SQUID) magnetometer system has been developed. The SQUID sensor is made from YBCO thin films using local oxygen-ion-irradiated microbridges. The SQUID is cooled by liquid nitrogen in an open cryostat. For the scanning process the sample is placed on a nonmagnetic stage inside a magnetic shield. The instrument has a spatial resolution of about one millimeter, which can be further improved. The system is used for nondestructive testing and for detecting the magnetic fields generated by corrosion currents.<>

Keywords

SQUIDs; barium compounds; high-temperature superconductors; magnetometers; superconducting thin films; yttrium compounds; HTSC; NDT; RF SQUID magnetometer system; SQUID sensor; YBa/sub 2/Cu/sub 3/O/sub 7/ thin films; corrosion currents; high T/sub c/ films; high-resolution magnetic imaging; liquid nitrogen; magnetic fields; magnetic shield; microbridges; nondestructive testing; nonmagnetic stage; open cryostat; scanning process; spatial resolution; superconducting quantum interference device; Magnetic sensors; Magnetic shielding; Nitrogen; Radio frequency; Radiofrequency interference; SQUID magnetometers; Superconducting devices; Superconducting thin films; Thin film sensors; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233956

Filename

233956