EP0300499A2
Expired / Lapsed
EP
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Composite superconductor layer
Assignee: Panasonic Holdings Corp
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Filing: 1988-07-22
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Granted: —
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Expires: 2008-07-22
Abstract
Abstract Excellent films of a high Tc superconductor (13) are easily produced on metal coated substrates (11) at a temperature below 700°C. These metal buffer films (12) are made of Pt, Au, Ag, Pd, Ni or Ti. The film superconductivity is significantly improved by the metal buffer layer. Since it is easy to form this metal coating on a substrate, the invention can increase the potential number of usable substrates such as fibers, amorphous solids or semiconductors.
Inventors
- 👤 Shinichiro Hatta
- 👤 Hidetaka Higashino
- 👤 Kumiko Hirochi
- 👤 Hideaki Adachi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 06:57
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0296; H10N60/0408; H10N60/0576; H10N60/0604; H10N60/0632; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/70; Y10S505/701; Y10S505/702; Y10S505/703; Y10S505/704; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
69 words
A superconductor comprising an oxide film deposited on a metal film formed on a substrate, said oxide containing A, B and Cu, in which the molar ratio of the elements is defined by wherein A is at least one element selected from Tl, Bi, Pb, Sc, Y and lanthanum series elements (atomic number: 57 - 71), and B is at least one elements selected from the Group IIa elements.
Claim 2
Dependent Claim
69 words
A superconductor comprising an oxide film deposited on a metal film formed on a substrate, said oxide containing A, B and Cu, in which the molar ratio of the elements is defined by wherein A is at least one element selected from Tl, Bi, Pb, Sc, Y and lanthanum series elements (atomic number: 57 - 71), and B is at least one elements selected from the Group IIa elements.
Claim 3
Dependent Claim
29 words
A superconductor according to claim 1, wherein the metal film is made of a material containing a transition metal element such as Pt, Au, Ag, Pd, Ni, Ti, etc.
Claim 4
Dependent Claim
34 words
A superconductor according to claim 1 or 2, wherein an additional metal film is formed on said oxide film, or the oxide films and metal films are laminated alternately to form a multi-layer structure.
Claim 5
Dependent Claim
21 words
A superconductor according to anyone of Claims 1 to 3,wherein the surface of said substrate is coated with a glass film.
Claim 6
Dependent Claim
34 words
A superconductor according to claim 4, using a substrate coated with a glass film composed of at least one substance selected from quartz glass, high silica glass, borosilicate glass, sodium-lime glass and oxynitride glass.
Claim 7
Dependent Claim
34 words
A superconductor according to anyone of claims 1 to 5,wherein the substrate is composed of at least one single crystal material selected from MgO, sapphire (α-Al₂O₃), spinel, SrTiO₃, silicon, silicon compounds, GsAs and ferrite.
Claim 8
Dependent Claim
30 words
A superconductor according to anyone of claims 1 to 5,wherein the substrate is composed of at least one chinaware material selected from alumina, MgO, ZrO₂, steatite, forsterite, beryllium and spinel.
Claim 9
Dependent Claim
18 words
A superconductor according to claim 4 or 5,using a single crystal (100) plane or (110) plane MgO substrate.
Claim 10
Dependent Claim
15 words
A superconductor according to claim 4 or 5,using a single crystal R plane sapphire substrate.
Claim 11
Dependent Claim
15 words
A superconductor according to claim 4 or 5,using a single crystal C plane sapphire substrate.
Claim 12
Dependent Claim
15 words
A superconductor according to claim 4 or 5,using a single crystal a plane sapphire substrate.
Claim 13
Dependent Claim
15 words
A superconductor according to claim 4 or 5,using a single crystal (111) plane spinel substrate.
Claim 14
Dependent Claim
15 words
A superconductor according to claim 4 or 5,using a single crystal (110) plane spinel substrate.
Claim 15
Dependent Claim
15 words
A superconductor according to claim 4 or 5,using a single crystal (100) plane spinel substrate.
Claim 16
Dependent Claim
19 words
A superconductor according to claim 4 or 5,using a single crystal (100) plane or (110) plane strontium titanate substrate.
Claim 17
Dependent Claim
14 words
A superconductor according to anyone of claims 1 to 5, using a fiber substrate.
Claim 18
Dependent Claim
35 words
A superconductor according to claim 16, wherein the fiber substrate is made of glass fiber, carbon fiber or a heat-resistant metal fiber such as the fiber of Nb, Ti, Ta, stainless steel or the like.
Claim 19
Dependent Claim
15 words
A superconductor according to anyone of claims 1 to 5, using an amorphous solid substrate.
References Cited (Backward Citations)
No citation records indexed.
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