Accession Number:

ADD014195

Title:

Method for Growing Patterned Thin Films of Superconductors.

Descriptive Note:

Patent, Filed 23 Nov 87, patented 27 Jun 89,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

• Lessoff, Howard
• Greene, Richard F.

Report Date:

1989-06-27

Pagination or Media Count:

6.0

Abstract:

A method for growing a patterned superconductive oxide film of the general formula XZ2Cu3O6x is disclosed, 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. This patterned superconductive oxide film of XZ2Cu3O6x is formed by 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 heated substrate to form on the substrate a thin film of XZ2Cu3Oy material, wherein y is an undefined number spot-heating preselected portions of the thin film in an oxygen-rich atmosphere to convert the preselected portions into the patterned superconductive oxide film of XZ2Cu3O6x and removing the unheated thin film of XZ2Cu3Oy material with a solvent. Patents. jhd

Descriptors:

• *CRYSTAL GROWTH
• *PATENTS
• *SUPERCONDUCTORS
• ALKALINE EARTH COMPOUNDS
• FILMS
• HEAT
• NITRATES
• OXIDES
• OXYGEN
• SOLUTIONS(MIXTURES)
• SUBSTRATES
• SUPERCONDUCTIVITY
• THIN FILMS
• WATER
• YTTRIUM OXIDES
• COPPER COMPOUNDS

Subject Categories:

• Crystallography
• Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE