Development of low aspect ratio coated conductor

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ReBa2Cu3O7-x(ReBCO{Re} =Y or rare earth) coated conductors are currently available as ribbon-shaped conductors. The high aspect ratio of such conductors is often regarded as a limitation for many electrotechnical applications due to the anisotropy of the electrical and mechanical properties and high ac losses. In this view, a method for the development of cube-textured, low aspect ratio wire substrate for ReBCO coated conductor is presented. The method is derived from the conventional cold-rolling and recrystallization process and modified to obtain a cube-textured wire with low aspect ratio rectangular cross section. To show the feasibility of the method, pure copper was used as raw material. Cube-textured copper substrate with a square cross section and a thickness around 0.5 mm was realized by longitudinally cutting a heavily cold-rolled thick tape. All 4 sides of the wire show a strong cube texture development. Cube texture development is comparable with the one obtained in standard tapes, with a fraction of cube-oriented area above 95% and a full width at half maximum of (002) \omega-scan ranging from 6.5�to 7.5�. The quality of the obtained surfaces was tested through the epitaxial growth of MgO/Pd bilayer. Preliminary results indicate that all 4 sides of the wire are equally available for epitaxial film growth and lead to a comparable film quality.
Original languageEnglish
Article number6949082
Pages (from-to)-
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 1 Jun 2015
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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