Method for growing patterned thin films of superconductors
US4843060A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1987 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Nov 23, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N60/0324
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.