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Title: Demonstration of High Current Density YBCO Coated Conductors on RE 2O 3-Buffered Ni Substrates with Two New Alternative Architectures

Abstract

In continuation of our effort to develop single buffer layer architectures for YBCO (YBa 2Cu 3O 7-g) coated tape conductors, we have studied RE2O3 (RE = Y, and rare earths) as candidate materials. Three types of crystal structures including the preferred cubic phase are known for the rare earth oxides. High quality simple cubic RE2O3 buffer layers were grown epitaxiahy on {100}<001> textured Ni substrates using both reactive evaporation and sol-gel processing. Detailed X-ray studies have shown that the Y2O3, Eu2O3, Gd2O3, and Yb2O3 were grown with a single epitaxial orientation. SEM micrographs indicated that both e-beam and sol-gel grown films were dense, continuous and crack free. High Jc YBCO films were grown on RE2O3-buffered Ni substrates with sputtered cap layers. Two new alternative buffer layer architectures were developed. A high Jc of 1.8 MA/cm2 at 77 K and self-field was obtained on YBCO films with a layer sequence of YBCO (pulsed laser deposition)/Yb2O3 (sputtered)/Y2O3 (e-beam)/Ni. Also, a high Jc of over 1 MA/cm2 at 77 K and self-field was obtained on YBCO films with a layer sequence of YBCO (ex-situ BaF2 process)/CeO2 (sputtered)YSZ sputtered)/RE2O3 (sol-gel or e-beam)Ni. The performance of sol-gel grown buffers approached the quality of e-beam grownmore » buffers.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EE); USDOE Office of Power Technologies; USDOE Office of Science (SC)
OSTI Identifier:
9402
Report Number(s):
ORNL/CP-104004
KC 02 03 01 0; EB 50 01 00 0; ON: DE00009402
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Conference
Resource Relation:
Conference: Cryogenic Engineering and International Cryogenic Materials Conference, Montreal, Canada, July 12-16, 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; High-Tc Superconductors; Yttrium Compounds; Barium Compounds; Copper Oxides; Substrates; Nickel; Rare Earth Compounds; Superconducting Wires; Critical Current; Current Density; Crystal Structure; Deposition

Citation Formats

Beach, D B, Chirayil, T G, Christen, D K, Cui, X, Feenstra, R, Goyal, A, Kroeger, D M, Lee, D F, Martin, P M, Mathis, J E, Morrell, J S, Norton, D P, Paranthaman, M, Specht, E D, and Verebelyi, D T. Demonstration of High Current Density YBCO Coated Conductors on RE2O3-Buffered Ni Substrates with Two New Alternative Architectures. United States: N. p., 1999. Web.
Beach, D B, Chirayil, T G, Christen, D K, Cui, X, Feenstra, R, Goyal, A, Kroeger, D M, Lee, D F, Martin, P M, Mathis, J E, Morrell, J S, Norton, D P, Paranthaman, M, Specht, E D, & Verebelyi, D T. Demonstration of High Current Density YBCO Coated Conductors on RE2O3-Buffered Ni Substrates with Two New Alternative Architectures. United States.
Beach, D B, Chirayil, T G, Christen, D K, Cui, X, Feenstra, R, Goyal, A, Kroeger, D M, Lee, D F, Martin, P M, Mathis, J E, Morrell, J S, Norton, D P, Paranthaman, M, Specht, E D, and Verebelyi, D T. Mon . "Demonstration of High Current Density YBCO Coated Conductors on RE2O3-Buffered Ni Substrates with Two New Alternative Architectures". United States. https://www.osti.gov/servlets/purl/9402.
@article{osti_9402,
title = {Demonstration of High Current Density YBCO Coated Conductors on RE2O3-Buffered Ni Substrates with Two New Alternative Architectures},
author = {Beach, D B and Chirayil, T G and Christen, D K and Cui, X and Feenstra, R and Goyal, A and Kroeger, D M and Lee, D F and Martin, P M and Mathis, J E and Morrell, J S and Norton, D P and Paranthaman, M and Specht, E D and Verebelyi, D T},
abstractNote = {In continuation of our effort to develop single buffer layer architectures for YBCO (YBa2Cu3O7-g) coated tape conductors, we have studied RE2O3 (RE = Y, and rare earths) as candidate materials. Three types of crystal structures including the preferred cubic phase are known for the rare earth oxides. High quality simple cubic RE2O3 buffer layers were grown epitaxiahy on {100}<001> textured Ni substrates using both reactive evaporation and sol-gel processing. Detailed X-ray studies have shown that the Y2O3, Eu2O3, Gd2O3, and Yb2O3 were grown with a single epitaxial orientation. SEM micrographs indicated that both e-beam and sol-gel grown films were dense, continuous and crack free. High Jc YBCO films were grown on RE2O3-buffered Ni substrates with sputtered cap layers. Two new alternative buffer layer architectures were developed. A high Jc of 1.8 MA/cm2 at 77 K and self-field was obtained on YBCO films with a layer sequence of YBCO (pulsed laser deposition)/Yb2O3 (sputtered)/Y2O3 (e-beam)/Ni. Also, a high Jc of over 1 MA/cm2 at 77 K and self-field was obtained on YBCO films with a layer sequence of YBCO (ex-situ BaF2 process)/CeO2 (sputtered)YSZ sputtered)/RE2O3 (sol-gel or e-beam)Ni. The performance of sol-gel grown buffers approached the quality of e-beam grown buffers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {7}
}

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