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ST115 - Coated Conductors on Tubular Metallic Wires by Combined Chemical Approaches
Coated Conductors on Tubular Metallic Wires
C. Millon1,2, S. Morlens1, P. Chaudoüet2, C. Jimenez2,
1 Institut Néel and CRETA, CNRS&UJF, 25 av des martyrs,
Abstract - Fabrication of YBCO wires has been explored by using tubes formed from textured tapes. The texture of tubes made from Ni-5 at % W is characterized as a bi-axial texture developing along both the axis and the circumference of the cylinder. The deposition of a buffer layer by metal-organic deposition on such a tube is described with the practical example of La2Zr2O7. A superconducting YBCO layer is deposited on top; its texture and the electrical performance are evaluated. In the present state of the art, the YBCO is superconducting at 88 K; it is textured, but can carry only week supercurrents due to insufficient percolation paths. Improvements of the process are underway to enhance the transport current properties.
Keywords - YBCO, HTS wire, coated conductor, tubular conductor, textured tube, La2Zr2O7, LZO
Submitted May 15, 2009; accepted July 20, 2009. Reference No. ST115 ; Category 2, 5.