Title :
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
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
