Epitaxial Tl2Ba2CaCu2O8 thin films on LaAlO3 and their microwave device properties

George V. Negrete; Robert B. Hammond

doi:10.1117/12.45595

1 July 1991 Epitaxial Tl2Ba2CaCu2O8 thin films on LaAlO3 and their microwave device properties

George V. Negrete, Robert B. Hammond

Proceedings Volume 1477, Superconductivity Applications for Infrared and Microwave Devices II; (1991) https://doi.org/10.1117/12.45595
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

Microwave data on epitaxial Tl2Ba2CaCu2O8 thin films grown on LaAlO3 substrates are reported. The authors fabricated and tested microstrip resonators using these films and performed measurements of the loss tangent of lanthanum aluminate substrates at 5 GHz and 77 K. Loss tangent values of 2 to 4X10-5 were measured. The authors extracted surface resistance for the superconducting thin films from unloaded Q measurements on microstrip resonators. They infer scaled surface resistance values of approximately 300 (mu) ohms at 10 GHz and 77 K from unloaded Q measurements at 5.6, 11.1, and 16.3 GHz. The measured surface resistances scale very closely with the square of the frequency.

Citation Download Citation

George V. Negrete and Robert B. Hammond "Epitaxial Tl2Ba2CaCu2O8 thin films on LaAlO3 and their microwave device properties", Proc. SPIE 1477, Superconductivity Applications for Infrared and Microwave Devices II, (1 July 1991); https://doi.org/10.1117/12.45595

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available