Reel-to-Reel Continuous Chemical Solution Deposition of Epitaxial Gd2O3Buffer Layers on Biaxially Textured Metal Tapes for the Fabrication of YBa2Cu3O7−δCoated Conductors
| العنوان: | Reel-to-Reel Continuous Chemical Solution Deposition of Epitaxial Gd2O3Buffer Layers on Biaxially Textured Metal Tapes for the Fabrication of YBa2Cu3O7−δCoated Conductors |
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| المؤلفون: | Dominic F. Lee, B. W. Kang, Patrick M Martin, Roeland Feenstra, Srivatsan Sathyamurthy, Keith J. Leonard, Mariappan Parans Paranthaman, Eliot D. Specht, David B. Beach, Donald M. Kroeger, Amit Goyal, David K. Christen, Tolga Aytug |
| المصدر: | Journal of the American Ceramic Society. 86:257-265 |
| بيانات النشر: | Wiley, 2003. |
| سنة النشر: | 2003 |
| مصطلحات موضوعية: | Materials science, Fabrication, Scanning electron microscope, Sputtering, Materials Chemistry, Ceramics and Composites, Analytical chemistry, Mineralogy, Reel-to-reel audio tape recording, Epitaxy, Layer (electronics), Yttria-stabilized zirconia, Pulsed laser deposition |
| الوصف: | A nonvacuum reel-to-reel dip-coating system has been used to continuously fabricate epitaxial Gd 2 O 3 buffer layers on mechanically strengthened, biaxially textured Ni-(3 at.% W-1.7 at.% Fe), defined as Ni-alloy, metal tapes. Because of its significance as a seed layer, optimum processing conditions (postannealing speed and temperature) of Gd 2 O 3 buffer layers have been studied. Highly textured films were obtained under reducing (96% Ar + 4% H 2 ) atmosphere at temperatures between 1100° and 1150°C; postannealing speed did not significantly affect the crystalline quality of the Gd 2 O 3 . Scanning electron microscopy revealed a continuous, dense, and crack-free surface morphology for these dip-coated buffers. The Gd 2 O 3 layer thickness led to pronounced differences in the growth characteristics of the subsequent YSZ and CeO 2 layers deposited by rf-magnetron sputtering. Epitaxial YBCO films grown by pulsed laser deposition on the short prototype CeO 2 /YSZ/Gd 2 O 3 /Ni-(3 at.% W-1.7 at.% Fe) conductors yielded self-field critical current densities (J c ) as high as 1.2 x 10 6 A/cm 2 at 77 K. Pure Ni tapes were used to assess the viability of dip-coated buffers for long length coated conductor fabrication. The YBCO films, grown on 80 cm long and 1 cm wide CeO 2 /YSZ/Gd 2 O 3 buffered Ni tapes by the industrially scalable ex situ BaF 2 precursor process, exhibited end-to-end self-field J c values of 6.25 x 10 5 A/cm 2 at 77 K. These results demonstrate the reproducible epitaxy of solution-derived seed layers on pure Ni and Ni-alloy tapes as well as underscore the viability of solution approaches for the production of long length YBCO-based coated conductors. |
| تدمد: | 1551-2916 0002-7820 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::2c2af51484192d7e52a76d29b077c5a0 https://doi.org/10.1111/j.1151-2916.2003.tb00009.x |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........2c2af51484192d7e52a76d29b077c5a0 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15512916 00027820 |
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