发明名称 |
Oxide superconductor and method of the production thereof. |
摘要 |
<p>The present invention provides an oxide superconductive substance comprising a composition containing at least Tl,. Bi, Sr, Ca, and Cu, in a ratio of (Tl+Bi) : Sr : Ca : Cu equal or very close to 1 : 2 : 2 : 3 and in a ratio of Tl/Bi in the range of 5/1 to 2/1 having a crystalline structure of the tetragonal system with the lattice constant, a = 0.38 nm, and c = 1.53 nm. The present invention provides also a method for producing (Tl1-y,Biy)Sr2Ca2Cu3Ox oxide superconductive substance comprising preparing a starting material containing metal oxide components in a ratio of (Tl1-y,Biy) : Sr : Ca : Cu : O = (1+Z) : 2 : 2 : 3 : x where 0 </= y </= 1/3, and the valaue of x is in the range of (7.5 + 1.5Z) </= x </=&lang& (8.3 + 1.5Z), and sintering said starting material in a non-oxidizing atmosphere.</p> |
申请公布号 |
EP0392430(A2) |
申请公布日期 |
1990.10.17 |
申请号 |
EP19900106788 |
申请日期 |
1990.04.09 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
INOUE, OSAMU;ADACHI, SEIJI;KAWASHIMA, SYNICHIRO;TAKAHASHI, YUKIHIRO;HIRANO, HIROFUMI |
分类号 |
C01B13/14;C01G29/00;C04B35/45;H01L39/24 |
主分类号 |
C01B13/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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