Chemical Compatibility of High-Tc Superconductors with Other Materials
Abstract
In any application, the new oxide superconductors will have to coexist in intimate contact with other materials. However, the copper oxygen bonds common to all presently known oxide superconductors with Tc above 40K are relatively weak. This means that elements that form much stronger bonds with oxygen, such as Si, will be chemically unstable when in contact with the copper- oxide superconductors. In this paper, we will establish procedures and guidelines that will enable workers to choose materials that will not react chemically with the oxide superconductors. These should enable researchers working in all applications areas to avoid unnecessary empirical searches for suitable substrate or host materials by eliminating the most thermodynamically unfavorable choices. In particular, we have determined which of the elemental metals should be most stable in contact with the copper-oxide semiconductors, and examined schemes for integrating these superconductors into Si devices. Keywords: Oxide superconductors, Sintering, and Annealing, Chemical stability.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 22, 1988
- Accession Number
- ADA199104
Entities
People
- R. Stanley Williams
- S. Chaudhury
Organizations
- University of California, Los Angeles