Coaxial line configuration for microwave power transmission study of YBa/sub 2/Cu/sub 3/O/sub 7- delta / thin films

Author

Chorey, C.M. ; Miranda, F.A. ; Bhasin, K.B.

Author_Institution

Sverdrup Technol., Brook Park, OH, USA

Volume

1

Issue

4

fYear

1991

Firstpage

178

Lastpage

180

Abstract

Microwave transmission measurements through YBa/sub 2/Cu/sub 3/O/sub 7- delta / (YBCO) high-transition-temperature superconducting thin films on lanthanum aluminate (LaAlO/sub 3/) have been performed in a coaxial line at 10 GHz. LaAlO/sub 3/ substrates were ultrasonically machined into washer-shaped discs, polished, and coated with laser-ablated YBCO. These samples were mounted in a 50- Omega coaxial air line to form a short circuit. The power transmitted through the films as a function of temperature was used to calculate the normal state conductivity and the magnetic penetration depth for the films.<>

Keywords

barium compounds; high-temperature superconductors; microwave power transmission; penetration depth (superconductivity); strip lines; superconducting thin films; transmission lines; yttrium compounds; 10 GHz; LaAlO/sub 3/ substrates; YBaCuO thin films; coaxial line; high-transition-temperature superconducting thin films; laser ablated films; magnetic penetration depth; microwave power transmission; normal state conductivity; washer-shaped discs; Circuits; Coaxial components; Conductive films; Lanthanum; Magnetic films; Microwave measurements; Performance evaluation; Power transmission; Superconducting thin films; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.107404

Filename

107404