US 8,148,300 B2 · Superconducting film and method of manufacturing the same

Abstract

The present invention relates to a superconducting film having a substrate and a superconductor layer formed on the substrate, in which nano grooves are formed parallel to a current flowing direction on a substrate surface on which the superconductor layer is formed and two-dimensional crystal defects are introduced in the superconductor layer on the nano grooves, and a method of manufacturing this superconducting film. A superconducting film of the invention, which is obtained at low cost and has very high Jc, is useful in applications such as cables, magnets, shields, current limiters, microwave devices, and semifinished products of these articles.

Claims18

Dependent claims

A superconducting film comprising:

a substrate having a surface;
a superconductor layer formed on said surface of the substrate;
nano grooves formed in said substrate, the nano grooves having a width of not more than 100 nm and defining a current flowing direction when current flows through the superconductor layer, wherein the current flow direction is parallel to the longitudinal direction of the nano grooves;
and
rows of two-dimensional crystal defects in the superconductor layer, the two-dimensional crystal defects being on the nano grooves.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/662,741Filed 30 Apr 2010 · division

Priority

JP 2003-30802029 Aug 2003

Published

US 2010/0267568 A121 Oct 2010

Granted

3 Apr 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

C23C 14/02
Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material: pretreatment of the material to be coated
C23C 14/028
Pretreatment of the material to be coated: physical treatment to alter the texture of the substrate surface, e.g. grinding, polishing
C23C 14/087
Oxides: of copper or solid solutions thereof
H10N 60/0576
Processes for depositing or forming copper oxide superconductor layers: characterised by the substrate

Family

PCT/JP2004/012781Parent of this division · filed 27 Aug 2004

US 2010/0267568 A1Pre-grant publication · published 21 Oct 2010

Application10/569,801Parent of this division

US 7,772,157 B2Parent of this division

US 2006/0258539 A1Published application

US 8,148,300 B2This patent

From the US filing history. Foreign family members aren’t listed.

Superconducting film and method of manufacturing the same

Life of this patent

Superconducting film and method of manufacturing the same

Life of this patent

Abstract

Claims18