Method of preparing high temperature superconductor films on opposite sides of a substrate

US5280013A · kind A · utility

Assignee

• Conductus, Inc. · US

Inventors

• Nathan Newman · Beverly Hills, US
• Aharon Kapitulnik · Palo Alto, US
• Brady Cole · Sunnyvale, US
• Randy Simon · Long Beach, US

Key dates

• Filing date: Oct 29, 1992
• Grant date: Jan 18, 1994
• Expiry date: Oct 29, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S505/866

Abstract

A superconducting electronic circuit device, useful when impedance matching is desired, especially suited to microwave frequencies, consisting of a thin dielectric layer with superconducting layers on both sides. A superconductor such as Yttrium Barium Copper Oxide (YBCO) is formed on a first substrate such as lanthanum aluminate. A protective layer like gold is deposited on the YBCO and a second carrier substrate is bonded to the protected YBCO. The first substrate is then thinned into a thin dielectric film and a second layer of superconductor is epitaxially grown thereon to create the desired circuits.