Claims
- 1. A superconducting thin film of compound oxide material deposited on a substrate, comprising a plurality of first layers (2) which are a-axis or b-axis oriented, and a plurality of second layers (1) which are c-axis oriented, said first and second layers being laminated on a surface of said substrate, each layer (1,2) being made of a superconducting compound oxide material, said a-axis or b-axis oriented first layers (2) and said c-axis oriented second layers (1) being alternately positioned one over another on said substrate (3) with each of said first layers juxtaposed with an adjacent one of said second layers, each layer (1,2) having a thickness between 50 .ANG. and 200 .ANG. so as to reduce magnetic field-induced anisotropy of the superconducting film and wherein said substrate is made of an oxide selected from the group consisting of MgO, SrTiO.sub.3, LaGaO.sub.3 and yttrium stabilized zirconia (YSZ) and said superconducting oxide material is Y--Ba--Cu--O system, Bi--Sr--Ca--Cu--O system or Tl--Ba--Ca--Cu--O system.
- 2. A superconducting thin film of compound oxide material deposited on a substrate, comprising a plurality of a-axis or b-axis oriented layers (2) and a plurality of c-axis oriented layers (1) laminated on a surface of said substrate, each layer (1,2) being made of a superconducting compound oxide material, said a-axis or b-axis oriented layers (2) and c-axis oriented layers (1) being alternately positioned one over another on said surface of said substrate (3) with each of said first layers juxtaposed with an adjacent one of said second layers, each of said layers (1,2) having a thickness between 50 .ANG. and 200 .ANG. so as to reduce magnetic field-induced anisotropy of the superconducting film.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2-170992 |
Jun 1990 |
JPX |
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CROSS-REFERENCE TO RELATED APPLICATIONS
This application is Rule 1.62 continuation of application Ser. No. 07/987,136, filed Dec. 8, 1992, now abandoned which is a continuation of application Ser. No. 07/722,478, filed Jun. 28, 1991 and now abandoned.
US Referenced Citations (5)
Non-Patent Literature Citations (5)
Entry |
Nakao et al., Japanese Journal of Applied Physics, vol. 27, No. 3, Mar. 1988, pp. L378-L380. |
Eom et al., "Epitaxial and Smooth Films of a-Axis YBa.sub.2 Cu.sub.3 O.sub.7 ", Science vol. 249 pp. 1549-1552. |
Sahu et al., "Chemistry of Tc Superconductors II", ACS 1988, Chapter 1. |
Superconductors' Material Problems, Science vol. 240, Apr. 1, 1988 pp. 25-26. |
Geballe, Science vol. 259, Mar. 12, 1993 pp. 1550-1551. |
Continuations (2)
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Number |
Date |
Country |
Parent |
987136 |
Dec 1992 |
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Parent |
722478 |
Jun 1991 |
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