Metal-oxide ceramic RF SQUID operating at 77 K

Author

Zakosarenko, V.M. ; Ilyichyov, E.V. ; Tulin, V.A.

Author_Institution

Inst. of Problems of Microelectron. Technol. & Superpure Mater., Acad. of Sci., Moscow, USSR

Volume

25

Issue

2

fYear

1989

fDate

3/1/1989 12:00:00 AM

Firstpage

946

Lastpage

949

Abstract

The authors fabricated several versions of Zimmerman-type RF SQUIDs (superconducting quantum interference devices) from bulk ceramic YBa₂Cu₃O_x samples and studied their characteristics. The SQUIDs operated reliably at liquid nitrogen temperature and proved to be stable over time. Some of their properties were similar to those of RF SQUIDs based on conventional superconductors, but there were also some major distinctions. The latter may be due to the fact that because of the macroscopic size of the weak link, the magnetic flux vortex enters reversibly (without respect to the RF current) the body of the weak link without crossing it. One of the SQUIDs operated as a conventional nonhysteretic SQUID, but the small value of the critical current of the weak link led to a lower operating temperature (T≲60 K)

Keywords

SQUIDs; barium compounds; high-temperature superconductors; yttrium compounds; 77 K; YBa₂Cu₃O_x; Zimmerman-type RF SQUIDs; bulk ceramic; critical current; high temperature superconductor; magnetic flux vortex; nonhysteretic SQUID; weak link; Ceramics; Critical current; Magnetic flux; Nitrogen; Radio frequency; Radiofrequency interference; SQUIDs; Superconducting devices; Superconductivity; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92444

Filename

92444