Method for Growing Patterned Thin Films of Superconductors.
Patent, Filed 23 Nov 87, patented 27 Jun 89,
DEPARTMENT OF THE NAVY WASHINGTON DC
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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
- Electricity and Magnetism