US4962083A
Expired / Lapsed
US
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High temperature T1-Ba-Ca-Cu-O and T1-Sr-Cu-O superconductor
Assignee: University of Arkansas at Fayetteville
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Filing: 1988-02-12
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Granted: 1990-10-09
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Expires: 2008-02-12
Abstract
Abstract A new high temperature superconductor with transition temperature above 120 K is disclosed. The superconductor in a preferred embodiment comprises T1RBaCuO wherein R is chosen from Group 2A elements excluding Ba. In another preferred embodiment, the superconductor comprises T1SrCuO. Processes for making high temperature superconductors are also disclosed.
Inventors
- 👤 Allen M. Hermann
- 👤 Zhengzhi Sheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:04
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/45; C04B35/4512; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/80; H10N60/85; H10N60/855; H10N60/857; Y; Y10; Y10S; Y10S505/00; Y10S505/775; Y10S505/776; Y10S505/783
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
80 words
A composition having superconductor properties that has the following approximate stoichiometry: TlCa.sub.y Ba.sub.z Cu.sub.u O.sub.v wherein: y+z is greater than or equal to 0.2 and less than or equal to 5; z is greater than 0 and less than 5; y is greater than 0 and less than 5; u is greater than or equal to 0.5 and less than or equal to 15; and v is greater than or equal to z+y+u and less than or equal to 2+z+y+u.
Claim 2
Dependent Claim
80 words
A composition having superconductor properties that has the following approximate stoichiometry: TlCa.sub.y Ba.sub.z Cu.sub.u O.sub.v wherein: y+z is greater than or equal to 0.2 and less than or equal to 5; z is greater than 0 and less than 5; y is greater than 0 and less than 5; u is greater than or equal to 0.5 and less than or equal to 15; and v is greater than or equal to z+y+u and less than or equal to 2+z+y+u.
Claim 3
Dependent Claim
80 words
A composition having superconductor properties that has the following approximate stoichiometry: TlSr.sub.y Ba.sub.z Cu.sub.u O.sub.v wherein: y+z is greater than or equal to 0.2 and less than or equal to 5; z is greater than 0 and less than 5; y is greater than 0 and less than 5; u is greater than or equal to 0.5 and less than or equal to 15; and v is greater than or equal to z+y+u and less than or equal to 2+z+y+u.
Claim 4
Dependent Claim
80 words
A composition having superconductor properties that has the following approximate stoichiometry: TlSr.sub.y Ba.sub.z Cu.sub.u O.sub.v wherein: y+z is greater than or equal to 0.2 and less than or equal to 5; z is greater than 0 and less than 5; y is greater than 0 and less than 5; u is greater than or equal to 0.5 and less than or equal to 15; and v is greater than or equal to z+y+u and less than or equal to 2+z+y+u.
Claim 5
Dependent Claim
58 words
A composition having superconductive properties that has the following approximate stoichiometry: TlSr.sub.y Cu.sub.u O.sub.v wherein: y is greater than 0.2 and less than or equal to 5; u is greater than or equal to 0.5 and less than or equal to 15; and v is greater than or equal to y+u and less than or equal to 2+y+u.
Claim 6
Dependent Claim
58 words
A composition having superconductive properties that has the following approximate stoichiometry: TlSr.sub.y Cu.sub.u O.sub.v wherein: y is greater than 0.2 and less than or equal to 5; u is greater than or equal to 0.5 and less than or equal to 15; and v is greater than or equal to y+u and less than or equal to 2+y+u.
Claim 7
Dependent Claim
16 words
A high temperature superconductor comprising a melt produced complex having the nominal composition: Tl.sub.1.86 CaBaCu.sub.3 O.sub.7.8+X.
Claim 8
Dependent Claim
16 words
A high temperature superconductor comprising a melt produced complex having the nominal composition: Tl.sub.1.86 CaBaCu.sub.3 O.sub.7.8+X.
Claim 9
Dependent Claim
17 words
A high temperature superconductor comprising a melt produced complex having the nominal composition: Tl.sub.2 Ca.sub.1.5 BaCu.sub.3 O.sub.8.5+X.
Claim 10
Dependent Claim
17 words
A high temperature superconductor comprising a melt produced complex having the nominal composition: Tl.sub.2 Ca.sub.1.5 BaCu.sub.3 O.sub.8.5+X.
Claim 11
Dependent Claim
17 words
A high temperature superconductor comprising a melt produced complex having the nominal composition: Tl.sub.1.5 Ca.sub.0.5 BaCu.sub.3 O.sub.6.8+X.
Claim 12
Dependent Claim
17 words
A high temperature superconductor comprising a melt produced complex having the nominal composition: Tl.sub.1.5 Ca.sub.0.5 BaCu.sub.3 O.sub.6.8+X.
Claim 13
Dependent Claim
17 words
A high temperature superconductor comprising a melt produced complex having the nominal composition: Tl.sub.2 Sr.sub.0.45 Cu.sub.3 O.sub.6.5+X.
Claim 14
Dependent Claim
17 words
A high temperature superconductor comprising a melt produced complex having the nominal composition: Tl.sub.2 Sr.sub.0.45 Cu.sub.3 O.sub.6.5+X.
Claim 15
Dependent Claim
16 words
A high temperature superconductor comprising a melt produced complex having the nominal composition: Tl.sub.2 SrBaCu.sub.3 O.sub.8+X.
Claim 16
Dependent Claim
16 words
A high temperature superconductor comprising a melt produced complex having the nominal composition: Tl.sub.2 SrBaCu.sub.3 O.sub.8+X.
References Cited (Backward Citations)
US4880773A
Cited
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