PUMA
Istituto dei materiali per l'elettronica ed il magnetismo     
Gilioli E., Baldini M., Bindi M., Bissoli F., Calestani D., Pattini F., Rampino S., Rocca M., Zannella S., Woerdenweber R. Pulsed electron deposition (PED) of single buffer layer for 'low-cost' YBCO coated conductors. In: EUCAS2007 - 8th European Conference on Applied Superconductivity (Brussels, Belgium, 16-20 September 2007). Proceedings, vol. 97 article n. 012197. (Journal of Physics: Conference Series). IOP Publishing Ltd, 2008.
 
 
Abstract
(English)
The challenge for the commercialization of YBCO Coated Conductors (CC) is the development of a low cost manufacturing process to allow for a cheap, fast and continuous deposition of superconducting coatings with high electrical performance. We are currently investigating 2 ways to reduce the CC production costs: i) reducing the complexity of the CC architecture, by growing a single buffer layer based on doped CeO2, and ii) utilizing a new reel-to-reel apparatus for long length CC processing, equipped with a cheap and reliable deposition system (PED, Pulsed Electron Deposition). In this work we report on the successful continuous deposition of very thick (up to 700 nm) doped-CeO2 single buffer layers on biaxially textured Ni-5at%W substrates by PED. XRD patterns display complete orientation and very good texture quality of our samples (FWHM out-of-plane values of approx 6), over 20 cm length. Optical and electron microscopy show a dense and crack-free film surface and dielectric strength measurement confirms excellent insulating properties. Preliminary results indicate that the simplified single buffer layer structure could be a reliable solution for the reduction of HTS CC production costs.
DOI: 10.1088/1742-6596/97/1/012197
Subject YBCO Coated Conductors (CC); PED, Pulsed Electron Deposition


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