Patent ID: 8043429
Filing Date: 2011-10-25
Classification: H01L

Abstract:
1. A method for fabricating a filament type high-temperature superconducting wire using a metal substrate coated with a first ceramic layer and a second ceramic layer, and an ion beam assisted deposition (IBAD) layer having bi-axially textured property, and a third ceramic layer sequentially coated epitaxially the metal substrate, the method comprising: depositing a conductive material epitaxially on a metal substrate having bi-axially textured property to deposit a conductive thin film layer; depositing at least one of silver, copper, nickel, silver, or a nickel alloy epitaxially on the deposited conductive thin film layer to deposit a metal layer; cutting the deposited metal layer into a filament shape having a predetermined width using at least one of a laser, a slitter, or etching, and separating the cut metal layer from the conductive thin film layer by at least one of selective etching, stress generation, or a difference in thermal expansion coefficients to form a metal filament; coating at least one layer of a ceramic buffer layer on an outside surface of the separated metal filament; coating a superconducting layer on an outside surface of the ceramic buffer layer; and coating at least one layer of a metal protective layer on an outside surface of the superconducting layer.