Thin Film Growth of Superconducting Materials Using Sprayed Salt Solutions.
Patent Application, Filed 23 Nov 87,
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A method for growing a high Tc superconductive oxide film of the general formula XZ2Cu3O6x, 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 XZCu stoichiometric ratio of 123 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
- Inorganic Chemistry
- Electricity and Magnetism
- Electrical and Electronic Equipment