Development of Textured Buffer Layer on Metal Tapes for Oxide Superconductors

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: F49620-02-C-0106
Agency Tracking Number: F003-0109
Amount: $499,980.00
Phase: Phase II
Program: STTR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Ues, Inc.
4401 Dayton-Xenia Road, Dayton, OH, 45432
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Rabi Bhattacharya
 Principal Research Scient
 (937) 426-6900
 rbhattacharya@ues.com
Business Contact
 Francis Williams
Title: Contracts Manager
Phone: (937) 426-6900
Email: fwilliams@ues.com
Research Institution
 Argonne National Laboratory
 Roger B Poeppel
 9700 South Cass Avenue, Building 212
Argonne, IL, 60439
 (630) 252-4930
 Federally funded R&D center (FFRDC)
Abstract
High current carrying conductors for various commercial and military applications can be fabricated by using a coating of high-temperature superconductor such as Yttrium-Barium-Copper-Oxide (YBCO) on a suitable metallic tape. It has been shown, however,that YBCO films deposited directly on polycrystalline metal substrates exhibit poor superconducting properties at liquid nitrogen temperature. A textured buffer layer on metal substrates is needed for the growth of YBCO films with a high critical currentdensity. In Phase I, UES has demonstrated the feasibility of growing highly textured MgO films on polycrystalline substrates using inclined substrate deposition (ISD) technique. A multilayer architecture incorporating ISD MgO layer on metal substratesexhibited optimum properties of the overlaying YBCO films. In Phase II, UES proposes to further optimize the multilayer architecture and develop a pilot production process for coating long metal tapes. A reel-to-reel sputter deposition system at UES willbe equipped with an electron beam evaporation source for this scale-up. Argonne National Laboratory and State University of New York, Albany will provide support in YBCO depositions and characterizations of coated conductors.

* information listed above is at the time of submission.

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