US5814583A
Expired / Lapsed
US
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Superconducting thin film and a method for preparing the same
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1996-07-01
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Granted: 1998-09-29
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Expires: 2016-07-01
Abstract
Abstract A high-temperature superconducting thin film of compound oxide selected from the group consisting of: Y1Ba2Cu3O7-x, Ho1Ba2Cu3O7-x, Lu1Ba2Cu3O7-x, Sm1Ba2Cu3O7-x, Nd1Ba2Cu3O7-x, Gd1Ba2Cu3O7-x, Eu1Ba2Cu3O7-x, Er1Ba2Cu3O7-x, Dy1Ba2Cu3O7-x, Tm1Ba2Cu3O7-x, Yb1Ba2Cu3O7-x, La1Ba2Cu3O7-x, (La, Sr)2CuO4-x, which is deposited on a substrate of MgO or SrTiO3, with the outer surface of the high-temperature superconducting thin film being covered with a protective crystalline film of SrTiO3.
Inventors
- 👤 Hideo Itozaki
- 👤 Saburo Tanaka
- 👤 Nobuhiko Fujita
- 👤 Shuji Yazu
- 👤 Tetsuji Jodai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:51
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0296; H10N60/0408; H10N60/0661; H10N60/0716; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/70; Y10S505/701; Y10S505/704; Y10S505/725; Y10S505/73; Y10S505/731; Y10S505/732
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
187 words
A high-temperature superconducting thin film composed of compound oxide and deposited on a substrate of MgO or SrTiO 3 , wherein said compound oxide is a member selected from the group consisting of: Y 1 Ba 2 Cu 3 O 7-x , Ho 1 Ba 2 Cu 3 O 7-x , Lu 1 Ba 2 Cu 3 O 7-x , Sm 1 Ba 2 Cu 3 O 7-x , Nd 1 Ba 2 Cu 3 O 7-x , Gd 1 Ba 2 Cu 3 O 7-x , Eu 1 Ba 2 Cu 3 O 7-x , Er 1 Ba 2 Cu 3 O 7-x , Dy 1 Ba 2 Cu 3 O 7-x , Tm 1 Ba 2 Cu 3 O 7-x , Yb 1 Ba 2 Cu 3 O 7-x , La 1 Ba 2 Cu 3 O 7-x , (La, Sr) 2 CuO 4-x , in which x is a number which satisfies a range of 0<x<1, and wherein an outer surface of said high-temperature superconducting thin film is covered with a protective layer comprising a crystalline film which is composed of SrTiO 3 .
Claim 2
Dependent Claim
187 words
A high-temperature superconducting thin film composed of compound oxide and deposited on a substrate of MgO or SrTiO 3 , wherein said compound oxide is a member selected from the group consisting of: Y 1 Ba 2 Cu 3 O 7-x , Ho 1 Ba 2 Cu 3 O 7-x , Lu 1 Ba 2 Cu 3 O 7-x , Sm 1 Ba 2 Cu 3 O 7-x , Nd 1 Ba 2 Cu 3 O 7-x , Gd 1 Ba 2 Cu 3 O 7-x , Eu 1 Ba 2 Cu 3 O 7-x , Er 1 Ba 2 Cu 3 O 7-x , Dy 1 Ba 2 Cu 3 O 7-x , Tm 1 Ba 2 Cu 3 O 7-x , Yb 1 Ba 2 Cu 3 O 7-x , La 1 Ba 2 Cu 3 O 7-x , (La, Sr) 2 CuO 4-x , in which x is a number which satisfies a range of 0<x<1, and wherein an outer surface of said high-temperature superconducting thin film is covered with a protective layer comprising a crystalline film which is composed of SrTiO 3 .
Claim 3
Dependent Claim
22 words
A superconducting thin film set forth in claim 1, wherein said superconducting thin film has a crystal structure of perovskite or quasi-perovskite.
Claim 4
Dependent Claim
22 words
A superconducting thin film set forth in claim 1, wherein said substrate is a single crystal of MgO or SrTiO 3 .
Claim 5
Dependent Claim
34 words
A superconducting thin film set forth in claim 3, wherein that said superconducting thin film is deposited on a (001) plane or (110) plane of a single crystal of MgO or SrTiO 3 .
References Cited (Backward Citations)
US3852877A
Cited
US3932315A
Cited
US4220959A
Cited
US4316785A
Cited
JPS56109824A
Cited
JPS60119731A
Cited
JPS60173885A
Cited
US4692385A
Cited
US4925647A
Cited
US4753856A
Cited
US4826808A
Cited
US5266815A
Cited
US5086037A
Cited
US4970197A
Cited
US5057484A
Cited
US5232903A
Cited
US5001108A
Cited
US4908346A
Cited
US5447908A
Cited
US5300487A
Cited
US5587870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2001-09-28 | 2002-03-30 | 2002-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-28 | 2006-03-30 | 2006-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-28 | 2010-03-30 | 2010-09-29 | $7700.00 | Window Closed / Lapsed |