High Performance YBCO Films
Abstract
The focus for the remainder of our program, which will end during the next quarter, is on oxygen annealing the buried YBCO ground plane through the Ag power plane and glass/metal handle as well as making an MCM structure with YBCO being used for only the signal layer. Oxygen annealing of a YBCO-covered lanthanum aluminate through five microns of thermally evaporated silver, after subjecting the sample to glass-firing conditions, recovered the microwave Q of the sample to within 16-18% of its original value (measured before the silver was deposited). The oxygen annealing time was only 4 hours. This Q degradation is believed to be acceptable for the YBCO ground plane of an MCM module. Addition of the STO dielectric layer between the YBCO ground plane and the silver makes the oxygen annealing time very long (> 18 hours).
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 25, 1994
- Accession Number
- ADA286567
Entities
People
- Aly Fathy
- Barry Thaler
- David Kalokitis
- Edgar J. Denlinger
- K. S. Harshavardhan
- T. Venkatesan
- Valerie Pendrick
Organizations
- Sarnoff Corporation