LaNiO(3) Buffer Layers for High Critical Current Density YBa(2)Cu(3)O(7-delta) and Tl(2)Ba(2)CaCu(2)O(8-delta) Films [electronic resource]
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| Online Access: |
Online Access |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C : Oak Ridge, Tenn. :
United States. Dept. of Energy ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1999.
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| Abstract: | We demonstrate high critical current density superconducting films of YBa₂Cu₃O{sub 7-{delta}} (YBCO) and Tl₂Ba₂CaCu₂O{sub 8-{delta}} (Tl-2212) using LaNiO₃ (LNO) buffer layers. YBCO films grown on an LNO buffer layer have only a slightly lower J{sub c} (5K, H=0) than films grown directly on a bare LaAlO₃ substrate. It is noteworthy that YBCO films grown on LNO buffer layers exhibit minor microstructural disorder and enhanced flux pinning. LNO-buffered Tl-2212 samples show large reductions in J{sub c} at all temperatures and fields compared to those grown on bare LaAlO₃, correlating to both a-axis grain and nonsuperconducting phase formation. With additional optimization, LNO could be a promising buffer layer for both YBCO and Tl-based superconducting films, perhaps ideally suited for coated conductor applications. |
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| Item Description: | Published through the Information Bridge: DOE Scientific and Technical Information. 08/24/1999. "sand99-2181j" Applied Physics Letters FT. Carlson, C.M.; Price, J.C.; Ginley, D.S.; Wang, Y.-T.; Venturini, E.L.; Siegal, M.P.; Blaugher, R.D.; Overmyer, D.L.; Parilla, P.A. |
| Physical Description: | 14 pages : digital, PDF file. |