Bulk solution techniques to fabricate high Jc YBCO coated conductors
| العنوان: | Bulk solution techniques to fabricate high Jc YBCO coated conductors |
|---|---|
| المؤلفون: | David K. Christen, B. W. Kang, Lee Heatherly Jr, Eliot D. Specht, Dominic F. Lee, David B. Beach, Srivatsan Sathyamurthy, Tolga Aytug, Keith J. Leonard, M. Parans Paranthaman, D. M. Kroeger, Amit Goyal |
| المصدر: | Physica C: Superconductivity. :1009-1012 |
| بيانات النشر: | Elsevier BV, 2002. |
| سنة النشر: | 2002 |
| مصطلحات موضوعية: | Auger electron spectroscopy, Materials science, Analytical chemistry, Energy Engineering and Power Technology, Condensed Matter Physics, Epitaxy, Electronic, Optical and Magnetic Materials, Pulsed laser deposition, Sputtering, Texture (crystalline), Electrical and Electronic Engineering, High current density, Electrical conductor, Yttria-stabilized zirconia |
| الوصف: | Low-cost, non-vacuum bulk solution technique has been developed to deposit epitaxial Gd 2 O 3 and La 2 Zr 2 O 7 (LZO) buffer layers directly onto both textured Ni and mechanically strengthened biaxially textured Ni–W(3 at.%)–Fe(1.7 at.%) (hereafter referred to as Ni–W) substrates. A reel-to-reel continuous dip-coating unit was used to produce meter lengths of highly textured, crack-free Gd 2 O 3 and LZO buffers on Ni and Ni–W tapes. Auger electron spectroscopy analysis of the textured Ni–W substrates indicated the presence of sulfur segregation to the surface, which possibly facilitated the growth of solution seed layers directly on Ni–W substrates. On dip-coated seed layers, a reel-to-reel sputtering unit was used to deposit epitaxially 200 nm thick YSZ layers followed by 10 nm thick CeO 2 to complete the RABiTS architecture. Pulsed laser deposition was used to grow YBa 2 Cu 3 O 7− δ (YBCO) films on these tapes in short lengths. YBCO films with J c values of 1.2×10 6 and 1.9×10 6 A/cm 2 at 77 K were obtained on Gd 2 O 3 and LZO buffered Ni–W substrates, respectively. YBCO films grown by ex situ BaF 2 precursor process on 80 cm long, 1 cm wide CeO 2 /YSZ/Gd 2 O 3 /Ni tapes exhibited end-to-end J c of 6.25×10 5 A/cm 2 at 77 K and self-field. This demonstrates that the solution layers provide a very good crystallographic template for the growth of high current density YBCO films, with performance approaching that of vacuum-deposited seed layers. |
| تدمد: | 0921-4534 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::4ecee50545b05704cdec25691dc1f372 https://doi.org/10.1016/s0921-4534(02)01563-0 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........4ecee50545b05704cdec25691dc1f372 |
| قاعدة البيانات: | OpenAIRE |
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