Thin Film Growth of Superconducting Materials Using Sprayed Salt Solutions.
Abstract
A method for growing a high Tc superconductive oxide film of the general formula XZ2Cu3O6+x, wherein X is yttrium, a lanthanide or a mixture thereof, Z is one or more alkaline earth elements and x is a number between 0 and 1. A preferred method of the invention comprises the steps of: preparing an aqueous solution of the nitrates of X, Z and Cu in the X:Z:Cu stoichiometric ratio of 1:2:3; spraying the aqueous nitrate solution onto a substrate heated to a temperature between about 300 C and about 700 C to form a thin film of XZ2Cu3Oy material on the substrate, wherein y is an undefined number; annealing the XZ2Cu3Oy film on the substrate at a temperature between about 800 C and about 950 C in an oxygen-rich atmosphere for a time sufficient to convert the XZ2Cu3Oy film to a low Tc superconductive film. Patent Applications. (mjm)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 23, 1987
- Accession Number
- ADD013837
Entities
People
- Howard Lessoff
- Richard L. Henry
Organizations
- United States Department of the Navy