发明名称 |
INTERMETALLIC COMPOUND SUPERCONDUCTING MATERIAL COMPRISING MAGNESIUM AND BERYLLIUM AND ALLOY SUPERCONDUCTING MATERIAL CONTAINING THE INTERMETALLIC COMPOUND AND METHOD FOR PREPARING THEM |
摘要 |
<p>There are provided an intermetallic-compound superconductor that is high in superconducting transition temperature, and an alloy superconductor that is high in superconducting transition temperature and excels in malleability and ductility, as well as a method of making such a superconductor with good reproducibility and at a low cost of manufacture. This entirely new intermetallic compound superconductor is made of magnesium (Mg) and beryllium (Be) and has a chemical composition expressed by formula: Mg1Be2, has a hexagonal AlB2 type crystallographic structure and has a superconducting transition temperature (Tc) of 35 K. An alloy containing this intermetallic compound excels in malleability and ductility and constitutes the alloy superconductor having a superconducting transition temperature (Tc) of 35 K and being low in specific resistance for normal conduction at a temperature ranging from the superconducting transition temperature to a room temperature. In the method of manufacture, a Mg containing feedstock powder and a Be containing feedstock powder are mixed together to form a mixture thereof which is, e.g., hot pressed to produce a semiconductor product. <IMAGE></p> |
申请公布号 |
EP1375692(A1) |
申请公布日期 |
2004.01.02 |
申请号 |
EP20020702848 |
申请日期 |
2002.03.08 |
申请人 |
JAPAN SCIENCE AND TECHNOLOGY AGENCY |
发明人 |
AKIMITSU, JUN;ZENITANI, YUJI;MURANAKA, TAKAHIRO;KADOMURA, KAZUNOBU |
分类号 |
C22C1/05;C01B35/04;C04B35/645;C22C1/04;C22C23/00;C22C25/00;C22C28/00;C22C30/00;C30B29/02;C30B29/52;H01B13/00;H01L39/12;(IPC1-7):C22C23/00 |
主分类号 |
C22C1/05 |
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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