Title:
SUPERCONDUCTING THIN FILM HAVING COLUMNAR PIN RETAINING CENTER USING NANO−DOTS
Document Type and Number:
WIPO Patent Application WO/2002/103815
Kind Code:
A1
Abstract:
A superconducting thin film having a columnar pin retaining center using nano−dots, comprising three−dimension−shaped nano−dots (3) formed in an insular form on a substrate (2) and consisting of a material other than that of the substrate and a superconducting substance, columnar defects (4) grown on the nano−dots (3) and consisting of a superconducting substance, lattice defects (6) formed in the columnar defects, and a superconducting thin film (5) formed on portions other than columnar defect portions of the substrate, wherein a substance other than a superconducting substance is deposited and aggregated with the temperature and film thickness of the substrate (2) controlled to form nano−dots (3), and a superconducting thin film (5) is grown and formed on the substrate (2). A superconducting thin film having a critical current density at least 10 times higher is implemented regardless of types of superconducting thin films and can be produced at lower costs, thereby providing a superconducting thin film suitably applied to such technical fields as cryoelectronics and microwave and being large in critical superconducting current density and critical superconducting magnetic field.
Inventors:
CRISAN IOAN ADRIAN (JP)
IHARA HIDEO DI
IHARA HIDEO DI
Application Number:
PCT/JP2002/006007
Publication Date:
December 27, 2002
Filing Date:
June 17, 2002
Export Citation:
Assignee:
JAPAN SCIENCE & TECH CORP (JP)
NAT INST OF ADVANCED IND SCIEN (JP)
CRISAN IOAN ADRIAN (JP)
IHARA YOSHIKO (JP)
IHARA HIDEYO (JP)
IHARA HIDETAKA (JP)
IHARA GEN EI (JP)
IHARA CHIAKI (JP)
NAT INST OF ADVANCED IND SCIEN (JP)
CRISAN IOAN ADRIAN (JP)
IHARA YOSHIKO (JP)
IHARA HIDEYO (JP)
IHARA HIDETAKA (JP)
IHARA GEN EI (JP)
IHARA CHIAKI (JP)
International Classes:
H01B12/06; H01B13/00; H01L39/00; H01L39/24; (IPC1-7): H01L39/02; H01L39/24; H01B12/06; H01B13/00
Foreign References:
| EP0553593A1 | 1993-08-04 | |||
| JPH02237179A | 1990-09-19 | |||
| JPH02253516A | 1990-10-12 | |||
| JPH05148084A | 1993-06-15 |
Other References:
CRISAN ADRIAN ET AL.: "Nano-dots induced extended pinning centers in HTS thin films", ISEC'01 8TH INTERNATIONAL SUPERCONDUCTIVE ELECTRONICS CONFERENCE EXTENDED ABSTRACTS, 19 June 2001 (2001-06-19) - 20 June 2001 (2001-06-20), pages 443 - 444, XP002956358
See also references of EP 1418632A4
See also references of EP 1418632A4
Attorney, Agent or Firm:
Hirayama, Kazuyuki (Shinjukugyoen Bldg. 2-3-10, Shinjuk, Shinjuku-ku Tokyo, JP)
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