Selective laser pyrolysis of metallo-organics as a method of forming patterned thin film superconductors

Patent · Tue Apr 10 00:00:00 EDT 1990

OSTI ID:6820374

Mantese, J V; Catalan, A B; Sell, J A; Meyer, M S; Mance, A M

This patent describes a method for forming patterned films of superconductive materials forming a solution from the neodecanoates of yttrium, barium and copper. The neodecanoates forming an oxide mixture exhibiting superconductive properties upon subsequent thermal decompositions wherein the oxide mixture is characterized by a ratio of yttrium:barium:copper of approximately 1:2:4, the solution comprising an organic solvent such as xylene; adding to the solution an appropriate dye, depositing a film of the solution having the dye onto a strontium titanate substrate; exposing selective regions of the film with an Argon laser emitting the wavelength of light, such that the exposed regions of the film become insoluble in the xylene; immersing the film into the xylene so that the soluble; unexposed regions of the film are removed from the substrate; heating the film to thermally decompose the neodecanoates into a film containing yttrium, barium and copper oxides; to promote recrystallization and grain growth of the metal oxides within the film and induce a change therein by which the film exhibits superconducting properties.

• Assignee: General Motors Corp., Detroit, MI
• Patent Number(s): US 4916115; A
• Application Number: PPN: US 7-209496A; TRN: 90-020913
• OSTI ID: 6820374
• Resource Relation: Patent File Date: 20 Jun 1988
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
DEPOSITION
COPPER OXIDES
ORGANOMETALLIC COMPOUNDS
LASER BEAM MACHINING
YTTRIUM OXIDES
FABRICATION
STRONTIUM TITANATES
SUPERCONDUCTORS
THIN FILMS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
FILMS
MACHINING
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
STRONTIUM COMPOUNDS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication