JPS643057A - Production of superconducting material - Google Patents
Production of superconducting materialInfo
- Publication number
- JPS643057A JPS643057A JP63067655A JP6765588A JPS643057A JP S643057 A JPS643057 A JP S643057A JP 63067655 A JP63067655 A JP 63067655A JP 6765588 A JP6765588 A JP 6765588A JP S643057 A JPS643057 A JP S643057A
- Authority
- JP
- Japan
- Prior art keywords
- calcined
- blend
- superconducting material
- oxides
- perovskite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title abstract 4
- 239000000203 mixture Substances 0.000 abstract 4
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 238000001354 calcination Methods 0.000 abstract 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract 1
- 239000002826 coolant Substances 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 150000002823 nitrates Chemical class 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 abstract 1
Classifications
-
- 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)
- Ceramic Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
PURPOSE:To obtain a superconducting material, consisting of perovskite-type oxides, capable of utilizing liquid N2 as a cooling medium and having the high critical temperature (TC), by blending oxides and salts of Ba, Dy and Cu, previ ously calcining the blend, pulverizing the calcined blend, pressing the resultant pulverized blend and normally sintering the obtained pressed compact at a temperature within a specific range. CONSTITUTION:Powders of oxides, carbonates, sulfates or nitrates of Ba, Dy and Cu having respective <=20mum, especially <=5mum average particle diameter are blended. The resultant blended powder is then previously calcined at 700-1,000 deg.C and the sintered blend is pulverized to <=5mum, especially <=3mum average particle diameter and subsequently pressed at 60-80% relative density. The above-mentioned pressed compact is then normally calcined at a tempera ture within the range of (melting point of the aforementioned calcined compact) - (melting point of the above-mentioned calcined compact -100 deg.C). Thereby the aimed superconducting material consisting of perovskite-type or pseudo- perovskite-type oxides, expressed by the formula and having <=10mum average crystal grain diameter is obtained. The aforementioned superconducting material has the high TC and TCF and characteristics thereof stabilized for a long period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63067655A JPS643057A (en) | 1987-03-22 | 1988-03-22 | Production of superconducting material |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6620587 | 1987-03-22 | ||
| JP62-66205 | 1987-03-22 | ||
| JP63067655A JPS643057A (en) | 1987-03-22 | 1988-03-22 | Production of superconducting material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH013057A JPH013057A (en) | 1989-01-06 |
| JPS643057A true JPS643057A (en) | 1989-01-06 |
Family
ID=26407377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63067655A Pending JPS643057A (en) | 1987-03-22 | 1988-03-22 | Production of superconducting material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643057A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173885A (en) * | 1984-02-18 | 1985-09-07 | Nippon Telegr & Teleph Corp <Ntt> | Superconductive material of oxide and manufacture thereof |
| JPS6122511A (en) * | 1984-07-09 | 1986-01-31 | 三菱電機株式会社 | Method of producing pbmo6s8 compound superconductive wire blank |
-
1988
- 1988-03-22 JP JP63067655A patent/JPS643057A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173885A (en) * | 1984-02-18 | 1985-09-07 | Nippon Telegr & Teleph Corp <Ntt> | Superconductive material of oxide and manufacture thereof |
| JPS6122511A (en) * | 1984-07-09 | 1986-01-31 | 三菱電機株式会社 | Method of producing pbmo6s8 compound superconductive wire blank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS643061A (en) | Production of superconducting material | |
| JPS643059A (en) | Production of superconducting material | |
| JPS643060A (en) | Production of superconducting material | |
| JPS643057A (en) | Production of superconducting material | |
| JPS643053A (en) | Production of superconducting material | |
| JPS643055A (en) | Production of superconducting material | |
| JPS643054A (en) | Production of superconducting material | |
| JPS643056A (en) | Production of superconducting material | |
| JPS643058A (en) | Production of superconducting material | |
| JP3461654B2 (en) | Manufacturing method of oxide superconductor | |
| JPH0234516A (en) | Production of tl-ba-ca-cu-o type superconducting ceramics | |
| JPS6476949A (en) | Production of superconducting substance | |
| JPH0397656A (en) | Oxide superconductor composition | |
| Dehaudt et al. | Production of high quality YBaCuO powders. | |
| JPS6476959A (en) | Superconducting material having high critical temperature and production thereof | |
| JPH01264953A (en) | Production of thallium system oxide superconductor | |
| JPH02208225A (en) | Oxide superconductor | |
| JPS643051A (en) | Production of superconducting material | |
| JPS649850A (en) | Superconducting material and production thereof | |
| JPH01111721A (en) | Production of oxide superconductor | |
| JPS6476955A (en) | Superconducting material having high critical temperature and production thereof | |
| Haertling et al. | Development of High Tc(Greater Than 110 K) Bismuth, Thallium and Yttrium-Based Materials as Superconducting Circuit Elements. Semiannual Report, February-October 1991 | |
| JPH0345514A (en) | Bi-based superconducting oxide powder and production of sintered compact using the same powder | |
| JPS6476956A (en) | Superconducting material having high critical temperature and production thereof | |
| JPH01282124A (en) | Production of powder of tinfinity-ca-ba-cu-o type superconducting oxide |