EP0285106A2
Expired / Lapsed
EP
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Method of forming superconducting circuit
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1988-03-29
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Granted: —
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Expires: 2008-03-29
Abstract
Abstract A method of forming a superconducting circuit comprises the steps of preparing a ceramics body which is changed from a non-superconductive phase not superconducting at the working temperature into a superconducting phase superconducting at the working temperature by heat treatment and performing the heat treatment on a part of the ceramics body by applying a laser beam to the ceramics body to change the same into the superconductive phase, thereby to form a superconducting circuit consisting of the superconductive phase and the non-superconductive phase on the ceramics body.
Inventors
- 👤 Kenichi C/O Osaka Works Takahashi
- 👤 Noriyuki C/O Osaka Works Yoshida
- 👤 Jun C/O Osaka Works Shioya
- 👤 Yoichi C/O Osaka Works Yamaguchi
- 👤 Akira C/O Osaka Works Mizoguchi
- 👤 Noriki C/O Osaka Works Hayashi
- 👤 Satoshi C/O Osaka Works Takano
- 👤 Kenji C/O Osaka Works Miyazaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 13:48
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0884; H10N60/0268; H10N60/0661
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
87 words
A method of forming a superconducting circuit comprising the steps of: preparing a ceramics body being changed from a non-superconductive phase not superconducting at its working temperature into a superconductive phase superconducting at the working temperature by heat treatment; and performing said heat treatment on a part of said ceramics body by applying a laser beam to said ceramics body to change the same into said superconductive phase thereby to form a superconducting circuit consisting of said superconductive phase and said non-superconductive phase on said ceramics body.
Claim 2
Independent Claim
87 words
A method of forming a superconducting circuit comprising the steps of: preparing a ceramics body being changed from a non-superconductive phase not superconducting at its working temperature into a superconductive phase superconducting at the working temperature by heat treatment; and performing said heat treatment on a part of said ceramics body by applying a laser beam to said ceramics body to change the same into said superconductive phase thereby to form a superconducting circuit consisting of said superconductive phase and said non-superconductive phase on said ceramics body.
Claim 3
Dependent Claim
23 words
A method of forming a superconducting circuit in accordance with claim 1, wherein said ceramics body is a film formed on a substrate.
Claim 4
Dependent Claim
32 words
A method of forming a superconducting circuit in accordance with claim 1, wherein said ceramics body is a ceramics plate obtained by molding raw materials and at least preliminarily sintering the same.
Claim 5
Dependent Claim
59 words
A method of forming a superconducting circuit in accordance with claim 3, wherein said ceramics plate is prepared by performing a series of steps of molding, preliminary molding and pulverization of a preliminarily sintered substance at least once after mixing of said raw materials to obtain ceramics powder, molding said ceramics powder and at least preliminarily sintering the same.
Claim 6
Dependent Claim
28 words
A method of forming a superconducting circuit in accordance with claim 1, wherein said heat treatment by application of said laser beam is performed under presence of oxygen.
Claim 7
Dependent Claim
34 words
A method of forming a superconducting circuit in accordance with claim 5, wherein said heat treatment by application of said laser beam is performed while supplying oxygen to the surface of said ceramics body.
Claim 8
Dependent Claim
26 words
A method of forming a superconducting circuit in accordance with claim 1, wherein said laser beam is emitted from a CO₂ laser or a YAG laser.
Claim 9
Dependent Claim
81 words
A method of forming a superconducting circuit in accordance with claim 1, wherein said raw materials for said ceramics body contain at least a single sort of element selected from those belonging to the groups Ia, IIa and IIIa of the periodic table, at least a single sort of element selected from those belonging to the groups Ib, IIb and IIIb of the periodic table and at least a single sort of element selected from oxygen, fluorine, sulfur, carbon and nitrogen.
Claim 10
Dependent Claim
25 words
A method of forming a superconducting circuit in accordance with claim 8, wherein said raw materials for said ceramics body contain at least copper oxide.
Claim 11
Dependent Claim
26 words
A method of forming a superconducting circuit in accordance with claim 9, wherein said ceramics body is prepared by an oxide containing yttrium, barium and copper.
Claim 12
Dependent Claim
78 words
A superconducting ceramics formed with a superconducting circuit consisting of a superconductive phase and a non-superconductive phase by steps of: preparing a ceramics body being changed from said non-superconductive phase not superconducting at its working temperature into said superconductive phase superconducting at the working temperature by heat treatment; and applying a laser beam to said ceramics body to perform said heat treatment on a part of said ceramics body, thereby to change the same into said superconductive phase.
Claim 13
Dependent Claim
78 words
A superconducting ceramics formed with a superconducting circuit consisting of a superconductive phase and a non-superconductive phase by steps of: preparing a ceramics body being changed from said non-superconductive phase not superconducting at its working temperature into said superconductive phase superconducting at the working temperature by heat treatment; and applying a laser beam to said ceramics body to perform said heat treatment on a part of said ceramics body, thereby to change the same into said superconductive phase.
Claim 14
Dependent Claim
77 words
A superconducting ceramics in accordance with claim 11, wherein raw materials for said superconducting ceramics body contain at least a single sort of element selected from those belonging to the groups Ia, IIa and IIIa of the periodic table, at least a single sort of element selected from those belonging to the groups Ib, IIb and IIIb of the periodic table and at least a single sort of element selected from oxygen, fluorine, sulfur, carbon and nitrogen.
Claim 15
Dependent Claim
22 words
A superconducting ceramics in accordance with claim 12, wherein said raw materials for said superconducting ceramics body contain at least copper oxide.
Claim 16
Dependent Claim
22 words
A superconducting ceramics in accordance with claim 13, wherein said ceramics body is prepared by an oxide of yttrium, barium and copper.
References Cited (Backward Citations)
No citation records indexed.
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