Superconductor structure

Claim 2

A superconductor structure comprising: a substrate defining a surface; a barrier layer of about 0.1-200 μm thickness applied to the surface of the substrate, the barrier layer comprising copper and oxygen and an element selected from the group consisting of Ba, Y and La and mixtures thereof and having a perovskite crystal structure; and a layer of a ceramic superconductive material applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho, Yb, Nb and Lu and 0≦x≦0.5; said barrier layer reducing interaction, but increasing adhesion, between the substrate and the layer of ceramic superconductive material.

Claim 3

A structure according to claim 1 wherein the barrier layer comprises barium copper oxide (BaCuO 2 ) having a barium to copper ratio of about 1:13 to about 1:1.

Claim 4

A superconductor structure according to claim 1, wherein the barrier layer comprises barium copper oxide (BaCuO 2 ) having a barium to copper ratio of about 1:20 to 1:0.5.

Claim 5

A superconductor structure comprising: a substrate defining a surface; a barrier layer comprising copper and oxygen and an element selected from the group consisting of Ba, Y and La and mixtures thereof, of about 10 μm to about 40 μm thickness applied to the surface of the substrate; and a layer of a ceramic superconductive material applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho, Yb, Nb and Lu and 0≦x≦0.5; said barrier layer reducing interaction, but increasing adhesion, between the substrate and the layer of ceramic superconductive material.

Claim 6

A superconductor structure comprising: a substrate defining a surface; a barrier layer comprising copper and oxygen and an element selected from the group consisting of Ba, Y and La and mixtures thereof, of about 10 μm to about 40 μm thickness applied to the surface of the substrate; and a layer of a ceramic superconductive material applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho, Yb, Nb and Lu and 0≦x≦0.5; said barrier layer reducing interaction, but increasing adhesion, between the substrate and the layer of ceramic superconductive material.

Claim 7

A superconductive structure comprising: a substrate defining a surface; a barrier layer comprising copper and oxygen and an element selected from the group consisting of Ba, Y and La and mixtures thereof, of about 0.1-200 μm thickness applied to the surface of the substrate; and a layer of a ceramic superconductive material having a thickness of from about 0.1 μm to about 200 μm applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho, Yb, Nb and Lu and 0≦x≦0.5; said barrier layer reducing interaction, but increasing adhesion, between the substrate and the layer of ceramic superconductive material.

Claim 8

A superconductive structure comprising: a substrate defining a surface; a barrier layer comprising copper and oxygen and an element selected from the group consisting of Ba, Y and La and mixtures thereof, of about 0.1-200 μm thickness applied to the surface of the substrate; and a layer of a ceramic superconductive material having a thickness of from about 0.1 μm to about 200 μm applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho, Yb, Nb and Lu and 0≦x≦0.5; said barrier layer reducing interaction, but increasing adhesion, between the substrate and the layer of ceramic superconductive material.

Claim 9

The structure according to claim 5 wherein the layer of superconductive material has a thickness of from about 10 μm to about 80 μm.

Claim 10

The structure according to claim 1, further comprising: a protective layer selected from the group consisting of silicon dioxide and silicon nitride applied to the surface of the superconductive material.

Claim 11

A superconductor structure, the superconductor structure comprising: an alumina substrate defining a surface; a barrier layer comprising copper and oxygen and an element selected from the group consisting of Ba, Y and La and mixtures thereof, having a perovskite crystal structure, of about 0.1-200 μm thickness applied to the surface of the alumina substrate; and a layer of ceramic superconductive material applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho, Yb, Md, and Lu and 0≦x≦0.5.

Claim 12

A superconductor structure, the superconductor structure comprising: an alumina substrate defining a surface; a barrier layer comprising copper and oxygen and an element selected from the group consisting of Ba, Y and La and mixtures thereof, having a perovskite crystal structure, of about 0.1-200 μm thickness applied to the surface of the alumina substrate; and a layer of ceramic superconductive material applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho, Yb, Md, and Lu and 0≦x≦0.5.

Claim 13

The structure according to claim 8 further comprising a protective layer selected from the group consisting of silicon dioxide and silicon nitride applied to the surface of the superconductive material.

Claim 14

The structure according to claim 3, further comprising: a protective layer selected from the group consisting of silicon dioxide and silicon nitride applied to the surface of the superconductive material.

Claim 15

The structure according to claim 4, further comprising: a protective layer selected from the group consisting of silicon dioxide and silicon nitride applied to the surface of the superconductive material.

Claim 16

The structure according to claim 5, further comprising: a protective layer selected from the group consisting of silicon dioxide and silicon nitride applied to the surface of the superconductive material.

Claim 17

The structure according to claim 12 wherein the layer of superconductive material has a thickness of from about 10 μm to about 80 μm.

Claim 18

The structure of claim 3 wherein the substrate comprises alumina.

Claim 19

The structure of claim 4 wherein the substrate comprises alumina.

Claim 20

The structure of claim 5 wherein the substrate comprises alumina.

Claim 21

The structure of claim 7 wherein the substrate comprises alumina.

Claim 22

The structure of claim 10 wherein the substrate comprises alumina.

Claim 23

The structure of claim 11 wherein the substrate comprises alumina.

Claim 24

The structure of claim 12 wherein the substrate comprises alumina.

Claim 25

A superconductor structure comprising: a substrate defining a surface; a barrier layer applied to the surface of the substrate, the barrier layer comprising BaCuO 2 ; and a layer of a ceramic superconductive material applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho, Yb, Nb and Lu and 0≦x≦0.5.

Claim 26

A superconductor structure comprising: a substrate defining a surface; a barrier layer applied to the surface of the substrate, the barrier layer comprising BaCuO 2 ; and a layer of a ceramic superconductive material applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho, Yb, Nb and Lu and 0≦x≦0.5.

Claim 27

A superconductor structure comprising: a substrate, comprising alumina, defining a surface; a barrier layer comprising BaCuO 2 having a barium to copper ratio from about 1:13 to about 1:1 and of about 10 μm to about 40 μm thickness applied to the surface of the substrate; and a layer of a ceramic superconductive material applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho Yb, Nb and Lu and 0≦x≦0.5, said barrier layer reducing interaction, but increasing adhesion, between the substrate and the layer of ceramic superconductive material.

Claim 28

A superconductor structure comprising: a substrate, comprising alumina, defining a surface; a barrier layer comprising BaCuO 2 having a barium to copper ratio from about 1:13 to about 1:1 and of about 10 μm to about 40 μm thickness applied to the surface of the substrate; and a layer of a ceramic superconductive material applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho Yb, Nb and Lu and 0≦x≦0.5, said barrier layer reducing interaction, but increasing adhesion, between the substrate and the layer of ceramic superconductive material.

Claim 29

A superconductive structure comprising: a substrate defining a surface; a barrier layer comprising copper and oxygen of about 0.1-200 μm thickness applied to the surface of the substrate; and a layer of a ceramic superconductive material having a thickness of from about 0.1 μm to about 200 μm applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho Yb, Nb and Lu and 0≦x≦0.5, said barrier layer reducing interaction, but increasing adhesion, between the substrate and the layer of ceramic superconductive material.

Claim 30

A superconductive structure comprising: a substrate defining a surface; a barrier layer comprising copper and oxygen of about 0.1-200 μm thickness applied to the surface of the substrate; and a layer of a ceramic superconductive material having a thickness of from about 0.1 μm to about 200 μm applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho Yb, Nb and Lu and 0≦x≦0.5, said barrier layer reducing interaction, but increasing adhesion, between the substrate and the layer of ceramic superconductive material.

Claim 31

A superconductor structure according to claim 23, the substrate comprising alumina.

Claim 32

A superconductor structure comprising: a substrate defining a surface; a barrier layer comprising copper and oxygen of about 0.1-200 μm thickness applied to the surface of the substrate; a layer of a ceramic superconductive material applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho Yb, Nb and Lu and 0≦x≦0.5, said barrier layer reducing interaction, but increasing adhesion, between the substrate and the layer of ceramic superconductive material; and a protective layer selected from the group consisting of silicon dioxide and silicon nitride, applied to the surface of the superconductive material.

Claim 33

A superconductor structure comprising: a substrate defining a surface; a barrier layer comprising copper and oxygen of about 0.1-200 μm thickness applied to the surface of the substrate; a layer of a ceramic superconductive material applied to the barrier layer, comprising a composition represented by the formula: Re.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-x wherein Re is a rare earth element selected from the group consisting of Er, Gd, Y, Tm, Sm, Eu, Dy, Ho Yb, Nb and Lu and 0≦x≦0.5, said barrier layer reducing interaction, but increasing adhesion, between the substrate and the layer of ceramic superconductive material; and a protective layer selected from the group consisting of silicon dioxide and silicon nitride, applied to the surface of the superconductive material.

Claim 34

The superconductor structure according to claim 22, further comprising: a protective layer selected from the group consisting to silicon dioxide and silicon nitride applied to the surface of the superconductive material.

Claim 35

A superconductor structure according to claim 25, the substrate comprising alumina.