Accession Number : ADD013837

Title :   Thin Film Growth of Superconducting Materials Using Sprayed Salt Solutions.

Descriptive Note : Patent Application, Filed 23 Nov 87,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Henry, Richard L ; Lessoff, Howard

Report Date : 23 Nov 1987

Pagination or Media Count : 21

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)

Descriptors :   *ALKALINE EARTH COMPOUNDS, *NITRATES, *PATENT APPLICATIONS, *SUPERCONDUCTIVITY, *SUPERCONDUCTORS, *THIN FILMS, ANNEALING, ATMOSPHERES, FILMS, OXIDES, OXYGEN, SALINE SOLUTION, SPRAYS, WATER, YTTRIUM

Subject Categories : Inorganic Chemistry
      Electricity and Magnetism
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE