High-T.sub.c superconducting unit having low contact surface resistivity and method of making.

US4963523A · kind A · utility

Assignees

• The United States of America as represented by the Secretary of the Commerce · US
• Westinghouse Electric Company LLC · US

Inventors

• John W. Ekin · Boulder, US
• Armand J. Panson · Pittsburgh, US
• Betty A. Blankenship · Pittsburgh, US

Key dates

• Filing date: Nov 6, 1987
• Grant date: Oct 16, 1990
• Expiry date: Nov 6, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S505/706

Abstract

A low resistivity contact to a high-Tc superconductor is made by forming a contact pad on the surface of an abraded or freshly prepared superconductor by depositing an inert metal on the surface so that a surface resistivity between the surface of the high-Tc superconductor and the pad is established of less than about 1000.mu..OMEGA.-cm.sup.2 at high-Tc superconductor operating temperatures.