JPS643058A - Production of superconducting material - Google Patents
Production of superconducting materialInfo
- Publication number
- JPS643058A JPS643058A JP63067656A JP6765688A JPS643058A JP S643058 A JPS643058 A JP S643058A JP 63067656 A JP63067656 A JP 63067656A JP 6765688 A JP6765688 A JP 6765688A JP S643058 A JPS643058 A JP S643058A
- 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)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
Abstract
PURPOSE:To obtain a superconducting material, consisting of perovskite-type oxides, of utilizing liquid N2 as a cooling medium and having the high critical temperature (TC), by blending oxides and salts of Ba, Tm and Cu, previously calcining the blend, pulverizing the calcined blend, pressing the resultant pulver ized 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, Tm 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 calcined 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 sintered 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 <=10Xm 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 |
|---|---|---|---|
| JP63067656A JPS643058A (en) | 1987-03-22 | 1988-03-22 | Production of superconducting material |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6620687 | 1987-03-22 | ||
| JP62-66206 | 1987-03-22 | ||
| JP63067656A JPS643058A (en) | 1987-03-22 | 1988-03-22 | Production of superconducting material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH013058A JPH013058A (en) | 1989-01-06 |
| JPS643058A true JPS643058A (en) | 1989-01-06 |
Family
ID=26407379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63067656A Pending JPS643058A (en) | 1987-03-22 | 1988-03-22 | Production of superconducting material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643058A (en) |
Citations (4)
| 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 |
| JPS63225526A (en) * | 1987-03-12 | 1988-09-20 | Nippon Telegr & Teleph Corp <Ntt> | Super conductive material |
| JPS63230524A (en) * | 1987-03-18 | 1988-09-27 | Kazuo Fueki | Superconductive material |
-
1988
- 1988-03-22 JP JP63067656A patent/JPS643058A/en active Pending
Patent Citations (4)
| 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 |
| JPS63225526A (en) * | 1987-03-12 | 1988-09-20 | Nippon Telegr & Teleph Corp <Ntt> | Super conductive material |
| JPS63230524A (en) * | 1987-03-18 | 1988-09-27 | Kazuo Fueki | Superconductive material |
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