Title :
Reel to Reel Coated Conductor Fabrication by Evaporation
Author :
Prusseit, W. ; Hoffman, C. ; Nemetschek, R. ; Sigl, G. ; Handke, J. ; Lümkemann, A. ; Kinder, H.
Author_Institution :
THEVA Dunnschichttechnik GmbH, Ismaning
fDate :
6/1/2006 12:00:00 AM
Abstract :
The commercial development of coated conductors is rapidly progressing. As a result we present an economic route to produce second generation HTS tape from the initial substrate preparation to the final metal coating. The most important and technically challenging steps are the deposition of an oriented buffer layer and the superconductor film in a reel-to-reel configuration. New evaporation techniques have been developed to enable reliable, high rate tape coating. Highly oriented MgO - buffer layers are realized by inclined substrate deposition (ISD) and DyBCO is deposited by simple e-gun evaporation yielding critical currents beyond 200 A/cm. Coated conductors have been fabricated up to 40 m length and are currently tested in a variety of applications
Keywords :
barium compounds; buffer layers; critical current density (superconductivity); dysprosium compounds; high-temperature superconductors; superconducting tapes; superconducting thin films; DyBa2Cu3O7; HTS tape coating; MgO; buffer layer; coated conductor; critical current density (superconductivity); critical currents; e-gun evaporation; evaporation techniques; inclined substrate deposition; metal coating; reel-reel configuration; superconductor film; Buffer layers; Coatings; Conductors; Critical current; Fabrication; High temperature superconductors; Substrates; Superconducting epitaxial layers; Superconducting films; Testing; Coated conductors; evaporation; inclined substrate deposition; superconductor films;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2006.873263
