LaNiO3 buffer layers for high critical current density YBa2Cu3O7−δ and Tl2Ba2CaCu2O8−δ films
Carlson, C. M. ; Parilla, P. A. ; Siegal, M. P. ; Ginley, D. S. ; Wang, Y.-T. ; Blaugher, R. D. ; Price, J. C. ; Overmyer, D. L. ; Venturini, E. L.
Woodbury, NY : American Institute of Physics (AIP)
Published 1999
Woodbury, NY : American Institute of Physics (AIP)
Published 1999
| ISSN: |
1077-3118
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
We demonstrate high critical current density superconducting films of YBa2Cu3O7−δ (YBCO) and Tl2Ba2CaCu2O8−δ (Tl-2212) using LaNiO3 (LNO) buffer layers. YBCO films grown on an LNO buffer layer have only a slightly lower Jc (5 K, H=0) than films grown directly on a bare LaAlO3 substrate. YBCO films grown on LNO buffer layers exhibit minor microstructural disorder and enhanced flux pinning. LNO-buffered Tl-2212 samples show large reductions in Jc at all temperatures and fields compared to those grown on bare LaAlO3, correlating to both a-axis grain and nonsuperconducting phase formation. LNO could be a promising buffer layer for both YBCO and Tl-based superconducting films in coated conductor applications. © 1999 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |