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 : 27 Jun 1989

Pagination or Media Count : 6

Abstract : A method for growing a patterned superconductive oxide film of the general formula XZ2Cu3O6+x 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 XZ2Cu3O6+x is formed by 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 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 XZ2Cu3O6+x; 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