TITLE

Radio frequency surface resistance of large-area Bi-Sr-Ca-Cu-O thick films on Ag plates

AUTHOR(S)
Bohn, C. L.; Delayen, J. R.; Balachandran, U.; Lanagan, M. T.
PUB. DATE
July 1989
SOURCE
Applied Physics Letters;7/17/1989, Vol. 55 Issue 3, p304
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Films nominally 80 µm thick of Bi-Sr-Ca-Cu-O on silver substrates with surface areas from 1.25 to 182 cm² were fabricated using two different processing procedures. Their rf surface resistances were measured as functions of temperature in the frequency range 2.65-29.2 GHz at low rf field amplitudes using cylindrical resonant cavities. The critical temperatures of the films were in the range 81-83 K. At X-band frequencies, the surface resistances matched that of room-temperature copper. The results were cornparable to recent data on small pellets of bulk Bi-Sr-Ca-Cu-O.
ACCESSION #
9831982

 

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