Title :
Superconducting interdigital transducers
Author :
Feller, J. ; Levy, M. ; Sarma, B.K. ; Fredricksen, H. ; Ritums, D. ; Wu, N.J. ; Li, X.Y. ; Ignatiev, A.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
A 50 MHz surface acoustic wave (SAW) delay line consisting of two interdigital transducers (IDTs) has been fabricated from a thin film of YBa2Cu3O7-δ, a high temperature superconductor, deposited on YZ LiNbO3. The insertion loss measured as a function of temperature shows a large improvement (~12 dB) at the superconducting transition. The IDTs are analyzed using an equivalent circuit model, and the IL is related to the measured sheet resistance of the YBCO film
Keywords :
barium compounds; electron device manufacture; equivalent circuits; high-temperature superconductors; interdigital transducers; superconducting devices; superconducting thin films; surface acoustic wave delay lines; surface acoustic wave transducers; ultrasonic transducers; yttrium compounds; 50 MHz; LiNbO3; SAW delay line; YBa2Cu3O7-LiNbO3; equivalent circuit model; high temperature superconductor; insertion loss; sheet resistance; superconducting interdigital transducers; superconducting thin film; superconducting transition; Barium materials/devices; Equivalent circuits; High-temperature superconductors; Interdigital transducers; Superconducting device fabrication; Superconducting films; Surface acoustic wave delay lines; Surface acoustic wave transducers; Yttrium materials/devices;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401768
