发明名称 |
A-AXIS HIGH TEMPERATURE SUPERCONDUCTING FILMS WITH PREFERENTIAL IN-PLANE ALIGNMENT |
摘要 |
2111210 9222426 PCTABS00018 An a-axis high temperature superconducting film having preferential in-plane orientation is formed. In the preferred embodiment, an a-axis film has substantial amounts of superconductor (12) oriented with its c-axis in a unified direction parallel to the substrate (16). YBCO on neodium gallate (110) plane has resulted in a high temperature superconductor with over 80 % by volume being a-axis with in-plane orientation. These films are epitaxial. The preferred method of film growth is for in situ growth by a laser ablation. Preferably, the a-axis film is nucleated by laser ablation onto a substrate which is at a temperature of 50 to 100 ·C less than the optimal substrate temperature for c-axis growth. Optionally, once a-axis nucleation has begun, the substrate temperature may be increased to optimize superconductor properties. |
申请公布号 |
CA2111210(A1) |
申请公布日期 |
1992.12.23 |
申请号 |
CA19922111210 |
申请日期 |
1992.06.01 |
申请人 |
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发明人 |
YOUNG, KWO-HSIUNG;SUN, JONATHAN ZAN-HONG |
分类号 |
C01G1/00;C30B23/02;C30B23/08;C30B29/22;H01L39/24 |
主分类号 |
C01G1/00 |
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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