US5017550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing thin film of oxide superconductor
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1988-03-30
•
Granted: 1991-05-21
•
Expires: 2008-03-30
Abstract
Abstract A thin film of an oxide superconductor having a homogeneous composition and less oxygen defects is produced by independently vaporizing onto a substrate at least one material selected from the group consisting of the elements of Ia, IIa and IIIa groups of the periodic table and their compounds and one material selected from the group consisting of Cu and its compounds and irradiating the substrate with oxygen ions and depositing the vaporized materials together with oxygen on the substrate to form the thin film of the oxide superconductor.
Inventors
- 👤 Jun Shioya
- 👤 Yoichi Yamaguchi
- 👤 Akira Mizoguchi
- 👤 Noriyuki Yoshida
- 👤 Kenichi Takahashi
- 👤 Kenji Miyazaki
- 👤 Satoshi Takano
- 👤 Noriki Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:59
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B35/00; C04B35/01; C04B35/45; C04B35/4504; C04B41/45; C04B41/50; C04B41/5072; C04B41/5074; C04B41/52; C04B41/80; C04B41/81; C04B41/85; C04B41/89; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0296; H10N60/0324; H10N60/0381; H10N60/0548; H10N60/0801; Y; Y10; Y10S; Y10S505/00; Y10S505/70; Y10S505/704; Y10S505/725; Y10S505/73; Y10S505/732
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
93 words
A method for producing a thin film of an oxide superconductor comprising independently vaporizing at least one first material selected from the group consisting of Y, lanthanides and their compounds, at least one second material selected from the group consisting of Ca, Sr and Ba and their compounds, and one third material selected from the group consisting of Cu and its compounds, ionizing the vaporized materials and irradiating a substrate with oxygen ions to deposit the vaporized materials together with oxygen on the substrate to form the thin film of the oxide superconductor.
Claim 2
Independent Claim
93 words
A method for producing a thin film of an oxide superconductor comprising independently vaporizing at least one first material selected from the group consisting of Y, lanthanides and their compounds, at least one second material selected from the group consisting of Ca, Sr and Ba and their compounds, and one third material selected from the group consisting of Cu and its compounds, ionizing the vaporized materials and irradiating a substrate with oxygen ions to deposit the vaporized materials together with oxygen on the substrate to form the thin film of the oxide superconductor.
Claim 3
Dependent Claim
16 words
The method according to claim 1, wherein at least one of the materials is an oxide.
Claim 4
Dependent Claim
34 words
The method according to claim 2, wherein the first material is an oxide selected from the group consisting of La 2 O 3 , Y 2 O 3 and Sc 2 O 3 .
Claim 5
Dependent Claim
30 words
The method according to claim 1, wherein the second material is a carbonate selected from the group consisting of Ba 2 CO 3 , SrCO 3 and CaCO 3 .
Claim 6
Dependent Claim
12 words
The method according to claim 2, wherein the third material is CuO.
Claim 7
Dependent Claim
53 words
The method according to claim 1, wherein the oxide superconductor has a composition of the formula: M.sup.1.sub.x M.sup.2.sub.1-x M.sup.3 O.sub.3 (I) or M.sup.1.sub.y M.sup.2.sub.2-y M.sup.3 O.sub.4 (II) wherein M 1 and M 2 are elements independently selected from the group consisting of Y, lanthanides, Ca, Sr and Ba and M 3 is Cu.
Claim 8
Dependent Claim
17 words
The method according to claim 1, wherein the substrate is made of a flexible elongate ceramic body.
Claim 9
Dependent Claim
15 words
The method according to claim 7, wherein the flexible elongate ceramic body is a tape.
Claim 10
Dependent Claim
16 words
The method according to claim 7, wherein the flexible elongate ceramic body is a round wire.
References Cited (Backward Citations)
JPS5565358A
Cited
FR2469005A1
Cited
US4430366A
Cited
FR2602246A1
Cited
EP0282839A2
Cited
US4861750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-20 | 1994-11-19 | 1995-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-20 | 1998-11-19 | 1999-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-20 | 2002-11-19 | 2003-05-21 | $7700.00 | Window Closed / Lapsed |