Operation of a Y-Ba-Cu-O rf SQUID at 81 K

Zimmerman, J. E.; Beall, J. A.; Cromar, M. W.; Ono, R. H.
August 1987
Applied Physics Letters;8/24/1987, Vol. 51 Issue 8, p617
Academic Journal
An rf superconducting quantum interference device (SQUID) has been made from bulk Y-Ba-Cu-O. The device displays quantum interference effects and operates with useful signal levels up to 81 K. The SQUID is formed from a ring of Y-Ba-Cu-O which is broken in the cryogenic environment and then recontacted. Estimates of the SQUID noise performance are given.


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