The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 1989
Filed:
Nov. 23, 1987
Howard Lessoff, Potomac, MD (US);
Richard F Greene, Bethesda, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A method for growing a patterned superconductive oxide film of the general formula XZ.sub.2 Cu.sub.3 O.sub.6+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 XZ.sub.2 Cu.sub.3 O.sub.6+x is formed by preparing an aqueous solutuion 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 XZ.sub.2 Cu.sub.3 O.sub.y 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 XZ.sub.2 Cu.sub.3 O.sub.6+x ; and removing the unheated thin film of XZ.sub.2 Cu.sub.3 O.sub.y material with a solvent.