Superconducting interdigital transducers

Author

Feller, J. ; Levy, M. ; Sarma, B.K. ; Fredricksen, H. ; Ritums, D. ; Wu, N.J. ; Li, X.Y. ; Ignatiev, A.

Volume

2

fYear

1994

fDate

Oct. 31 1994-Nov. 3 1994

Firstpage

825

Abstract

A 50 MHz surface acoustic wave (SAW) delay line consisting of two interdigital transducers (IDTs) has been fabricated from a thin film of YBa₂Cu₃O_7-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;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE

Conference_Location

Cannes, France

Print_ISBN

0-7803-2012-3

Type

conf

DOI

10.1109/ULTSYM.1994.401768

Filename

401768