CaF.sub.2 passivation layers for high temperature superconductors

US4965244A · kind A · utility

Assignee

• Regents of the University of Minnesota · US

Inventors

• John Weaver · Golden Valley, US
• Robert K. Grasselli · Hersbruck, DE
• David L. Nelson · Webster, US
• Harry M. Meyer, III · Coon Rapids, US
• Donald M. Hill · Minneapolis, US

Key dates

• Filing date: Sep 19, 1988
• Grant date: Oct 23, 1990
• Expiry date: Sep 19, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S505/732
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A CaF.sub.2 passivation layer is applied on the surface of a superconducting oxide by evaporation which does not disrupt the superconductive properties of the superconducting oxide.