Fabrication of long lengths of YBCO coated conductors using a continuous reel-to-reel dip-coating unit

作者：M. Paranthaman, T. Chirayil, S. Sathyamurthy, D. B. Beach, A. Goyal, F.A. List, D.F. Lee, X. Cui, Songwei Lu, Byeongwon Kang, E. D. Specht, P.M. Martin, D. M. Kroeger, R. M. Feenstra, C. Cantoni, D. K. Christen · 发表于：IEEE Transactions on Applied Superconductivity · 年份：2001 · DOI：10.1109/77.919730 · 被引用次数：53 · 研究领域：Physics of Superconductivity and Magnetism、Advanced Condensed Matter Physics、Electronic and Structural Properties of Oxides

A low-cost, non-vacuum, solution precursor route has been developed to produce epitaxial Gd/sub 2/O/sub 3/ and Eu/sub 2/O/sub 3/ buffer layers and YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// (YBCO) superconductors on biaxially textured metal substrates. On sol-gel Eu/sub 2/O/sub 3/ seed layers with sputtered YSZ and CeO/sub 2/ top layers, a YBCO film with a J/sub c/ of over 1 MA/cm/sup 2/ at 77 K was obtained. On all solution buffer layers (CeO/sub 2//Eu/sub 2/O/sub 3//Ni), YBCO film with a J/sub c/ of 200,000 A/cm/sup 2/ at 77 K was grown using pulsed laser deposition (PLD). Meter lengths of epitaxial and crack-free Gd/sub 2/O/sub 3/ buffer layers were fabricated on cube textured Ni-W (3 at.%) substrates for the first time. High quality YBCO films were deposited on Rolling-Assisted Biaxially Textured Substrates (RABiTS) using a trifluoroacetate (TFA) precursor approach. The precursors were either spin-coated or dip-coated and decomposed in a newly developed fast 3-hour burn-out step followed by post-annealing. In a stationary burn-out route, we have produced 40 cm long crack-free YBCO TFA precursors on RABiTS. On short segments, YBCO films with a J/sub c/ of over 500,000 A/cm/sup 2/ at 77 K were grown on all PLD buffered-Ni substrates (CeO/sub 2//YSZ/CeO/sub 2//Ni).