KR900701659A - 초전도 금속 산화 조성물 및 제조 및 사용방법 - Google Patents
초전도 금속 산화 조성물 및 제조 및 사용방법Info
- Publication number
- KR900701659A KR900701659A KR1019900701396A KR900701396A KR900701659A KR 900701659 A KR900701659 A KR 900701659A KR 1019900701396 A KR1019900701396 A KR 1019900701396A KR 900701396 A KR900701396 A KR 900701396A KR 900701659 A KR900701659 A KR 900701659A
- Authority
- KR
- South Korea
- Prior art keywords
- composition
- superconducting
- oxides
- mixed
- heated
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims 5
- 239000002184 metal Substances 0.000 title 1
- 230000001590 oxidative effect Effects 0.000 title 1
- 239000000463 material Substances 0.000 claims 5
- 239000004020 conductor Substances 0.000 claims 3
- 150000002978 peroxides Chemical class 0.000 claims 3
- 238000001816 cooling Methods 0.000 claims 2
- 239000011874 heated mixture Substances 0.000 claims 2
- 230000005668 Josephson effect Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 230000000977 initiatory effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F1/00—Methods of preparing compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or the rare earths, in general
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/45—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides
- C04B35/4512—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides containing thallium oxide
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/80—Constructional details
- H10N60/85—Superconducting active materials
- H10N60/855—Ceramic superconductors
- H10N60/857—Ceramic superconductors comprising copper oxide
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 온도의 함수로서 본 발명의 조성물에 의해 배출된 자속(flux)의 플롯을 보여준다.
Claims (10)
- 하기 공칭 일반식을 갖고, 적어도 130K의 온도에서 초전도성의 개시를 갖는 초전도 조성물.T1BaaCabCucOx상기식에서 a는 약2 내지 약4이고, b는 약7/2 내지 약 5이고, c는 약9/2 내지 약7이고, x=(a+b+c+y)이며 이때, y는 약 1/2-약 3이다.
- 제1항에 있어서, “a” 가 약 2-약 3이고 “b”가 약 4이고 “c”가 약 5이고 “y”가 약 1/2-약 2인 초전도 조성물.
- 제2항에 있어서, “a”가 약 2인 초전도 조성물.
- 필수적으로 화학양론적 양의 T1, Ca 및 Cu의 산화물과 Ba의 과산화물을 혼합시켜, 제 1항의 조성물을 얻고, 약 940℃-약 980℃까지 제한된 분위기 내에서 혼합물을 가열시키고, 상기 온도를 약 5분 이상 유지시키고; 상기 조성물을 냉각시키는 것으로 구성된 초전도 조성물의 제조 방법.
- 제4항에 있어서, 산화물의 화학양론적 양이 제3항의 조성물을 제공하도록 선택되는 방법.
- 제4항에 있어서, Ca 및 Cu 산화물과 Ba의 과산화물이 혼합되고, 약 800℃로 가열되고, 분쇄되며, T1산화물과 혼합되어, 가열된 혼합물로 제공하는 방법.
- 제5항에 있어서, Ca 및 Cu의 산화물 및 Ba의 과산화물이 혼합되고, 약 800℃로 가열되고, 분쇄되고, T1 산화물과 혼합되어, 가열된 혼합물을 제공하는 방법.
- 제1항의 조성물로 구성된 전도체 물질을 상기 조성물의 Tc이하로 냉각시키는 단계; 상기 전도체 물질을 상기 온도 이하로 유지하면서 상기 물질내에 전류흐름을 개시하는 단계로구성된, 전기 저항의 손실없이 전도체 물질내에 전류를 전도하는 방법.
- 제8항에 있어서, 상기 전도체물질이 77K- 상기 조성물의 Tc로 냉각되는 방법.
- 초전도 물질이 제1항의 조성물을 포함하는 개선된 조셉슨-효과 장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US26618088A | 1988-11-02 | 1988-11-02 | |
| US266,180 | 1988-11-02 | ||
| PCT/US1989/004477 WO1990005384A1 (en) | 1988-11-02 | 1989-10-16 | Superconducting metal oxide compositions and processes for manufacture and use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR900701659A true KR900701659A (ko) | 1990-12-04 |
Family
ID=23013507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019900701396A KR900701659A (ko) | 1988-11-02 | 1989-10-16 | 초전도 금속 산화 조성물 및 제조 및 사용방법 |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0441903A4 (ko) |
| JP (1) | JPH04501553A (ko) |
| KR (1) | KR900701659A (ko) |
| AU (1) | AU5096990A (ko) |
| CA (1) | CA2002022A1 (ko) |
| DK (1) | DK72091A (ko) |
| NO (1) | NO911667L (ko) |
| WO (1) | WO1990005384A1 (ko) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE68909945T2 (de) * | 1988-08-10 | 1994-03-03 | Du Pont | Supraleitende metalloxidzusammensetzungen und verfahren zur herstellung. |
| JPH07138019A (ja) * | 1993-11-16 | 1995-05-30 | Nec Corp | タリウム系酸化物超伝導体の製造方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1168762A (en) * | 1981-06-22 | 1984-06-05 | Osamu Michikami | Method of fabrication for josephson tunnel junction |
-
1989
- 1989-10-16 KR KR1019900701396A patent/KR900701659A/ko not_active Application Discontinuation
- 1989-10-16 AU AU50969/90A patent/AU5096990A/en not_active Abandoned
- 1989-10-16 EP EP19900903287 patent/EP0441903A4/en not_active Withdrawn
- 1989-10-16 WO PCT/US1989/004477 patent/WO1990005384A1/en not_active Application Discontinuation
- 1989-10-16 JP JP90503500A patent/JPH04501553A/ja active Pending
- 1989-11-01 CA CA002002022A patent/CA2002022A1/en not_active Abandoned
-
1991
- 1991-04-19 DK DK072091A patent/DK72091A/da not_active Application Discontinuation
- 1991-04-26 NO NO91911667A patent/NO911667L/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU5096990A (en) | 1990-05-28 |
| EP0441903A4 (en) | 1991-12-04 |
| DK72091D0 (da) | 1991-04-19 |
| WO1990005384A1 (en) | 1990-05-17 |
| NO911667D0 (no) | 1991-04-26 |
| DK72091A (da) | 1991-04-19 |
| EP0441903A1 (en) | 1991-08-21 |
| CA2002022A1 (en) | 1990-05-02 |
| JPH04501553A (ja) | 1992-03-19 |
| NO911667L (no) | 1991-04-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |