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Title: A compositional gradient Ce1−xZrxO2 buffer architecture for producing high-performance YBCO film

Abstract

Highlights: • The compositional gradient CZO buffer architecture can help improve the biaxial texture of YBCO film. • The high density stacking faults are directly observed via a spherical aberration corrected transmission electron microscope. • The enhanced flux pinning force and current-carrying capacity of YBCO films are achieved as a result of lattice strains. - Abstract: In this work, YBCO films were epitaxially grown on Ce{sub 1−x}Zr{sub x}O{sub 2} (CZO) buffered yttria stabilized zirconia (YSZ) single crystal substrates through a fluorine-free sol-gel process. The influence of two different CZO buffer architectures on the microstructure and superconducting properties of YBCO films was investigated. According to XRD results in combination with (S)TEM analysis, it was confirmed that YBCO film grown on the gradient CZO buffer layer (CZO-G) exhibits better in-plane and out-of-plane texture than YBCO film deposited on the uniform CZO buffer layer (CZO-20). And besides, the superconducting performances especially the current-carrying capacity under magnetic field of the former was much higher than that of the latter, which means that the enhanced flux pinning force will be presented in YBCO film on CZO-G buffer layer. The maximum pinning force of the YBCO film grown on CZO-G buffer architecture is up to 17.67more » GN/m{sup 3} @ 65 K. HR-STEM analysis shows that the stacking faults within YBCO matrix gave rise to the considerable nanoscale lattice-strains which may suppress the formation of Copper pairs and produce nanoscale non-superconducting regions served as pinning centers to significantly improve the flux pinning performance of YBCO film. Given the above, it has been implied that high-performance YBCO coated conductor can be developed by using a compositional gradient Ce{sub 1−x}Zr{sub x}O{sub 2} films as buffer architecture.« less

Authors:
 [1]; ;  [2];  [2];  [2]; ; ; ; ; ;
  1. Advanced Material Analysis and Test Center, Xi'an University of Technology, Xi'an, Shaanxi 710048 (China)
  2. School of Material Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048 (China)
Publication Date:
OSTI Identifier:
22805097
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 142; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BARIUM OXIDES; BUFFERS; CERIUM OXIDES; COPPER OXIDES; DENSITY; EPITAXY; HIGH-TC SUPERCONDUCTORS; LAYERS; MAGNETIC FLUX; MICROSTRUCTURE; MONOCRYSTALS; NANOSTRUCTURES; STACKING FAULTS; SUBSTRATES; THIN FILMS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; YTTRIUM OXIDES; ZIRCONIUM OXIDES

Citation Formats

Lei, Li, School of Material Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa 923-1292, Li, Limin, Wang, Shasha, Zhao, Gaoyang, Key Laboratory of Electrical Materials and Infiltration Technology of Shaanxi Province, Xi'an, Shaanxi 710048, Jia, Jiqiang, Oshima, Yoshifumi, Zhao, Lei, Jin, Lihua, Wang, Yao, Li, Chengshan, and Zhang, Pingxiang. A compositional gradient Ce1−xZrxO2 buffer architecture for producing high-performance YBCO film. United States: N. p., 2018. Web. doi:10.1016/J.MATCHAR.2018.06.002.
Lei, Li, School of Material Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa 923-1292, Li, Limin, Wang, Shasha, Zhao, Gaoyang, Key Laboratory of Electrical Materials and Infiltration Technology of Shaanxi Province, Xi'an, Shaanxi 710048, Jia, Jiqiang, Oshima, Yoshifumi, Zhao, Lei, Jin, Lihua, Wang, Yao, Li, Chengshan, & Zhang, Pingxiang. A compositional gradient Ce1−xZrxO2 buffer architecture for producing high-performance YBCO film. United States. doi:10.1016/J.MATCHAR.2018.06.002.
Lei, Li, School of Material Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa 923-1292, Li, Limin, Wang, Shasha, Zhao, Gaoyang, Key Laboratory of Electrical Materials and Infiltration Technology of Shaanxi Province, Xi'an, Shaanxi 710048, Jia, Jiqiang, Oshima, Yoshifumi, Zhao, Lei, Jin, Lihua, Wang, Yao, Li, Chengshan, and Zhang, Pingxiang. Wed . "A compositional gradient Ce1−xZrxO2 buffer architecture for producing high-performance YBCO film". United States. doi:10.1016/J.MATCHAR.2018.06.002.
@article{osti_22805097,
title = {A compositional gradient Ce1−xZrxO2 buffer architecture for producing high-performance YBCO film},
author = {Lei, Li and School of Material Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048 and School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa 923-1292 and Li, Limin and Wang, Shasha and Zhao, Gaoyang and Key Laboratory of Electrical Materials and Infiltration Technology of Shaanxi Province, Xi'an, Shaanxi 710048 and Jia, Jiqiang and Oshima, Yoshifumi and Zhao, Lei and Jin, Lihua and Wang, Yao and Li, Chengshan and Zhang, Pingxiang},
abstractNote = {Highlights: • The compositional gradient CZO buffer architecture can help improve the biaxial texture of YBCO film. • The high density stacking faults are directly observed via a spherical aberration corrected transmission electron microscope. • The enhanced flux pinning force and current-carrying capacity of YBCO films are achieved as a result of lattice strains. - Abstract: In this work, YBCO films were epitaxially grown on Ce{sub 1−x}Zr{sub x}O{sub 2} (CZO) buffered yttria stabilized zirconia (YSZ) single crystal substrates through a fluorine-free sol-gel process. The influence of two different CZO buffer architectures on the microstructure and superconducting properties of YBCO films was investigated. According to XRD results in combination with (S)TEM analysis, it was confirmed that YBCO film grown on the gradient CZO buffer layer (CZO-G) exhibits better in-plane and out-of-plane texture than YBCO film deposited on the uniform CZO buffer layer (CZO-20). And besides, the superconducting performances especially the current-carrying capacity under magnetic field of the former was much higher than that of the latter, which means that the enhanced flux pinning force will be presented in YBCO film on CZO-G buffer layer. The maximum pinning force of the YBCO film grown on CZO-G buffer architecture is up to 17.67 GN/m{sup 3} @ 65 K. HR-STEM analysis shows that the stacking faults within YBCO matrix gave rise to the considerable nanoscale lattice-strains which may suppress the formation of Copper pairs and produce nanoscale non-superconducting regions served as pinning centers to significantly improve the flux pinning performance of YBCO film. Given the above, it has been implied that high-performance YBCO coated conductor can be developed by using a compositional gradient Ce{sub 1−x}Zr{sub x}O{sub 2} films as buffer architecture.},
doi = {10.1016/J.MATCHAR.2018.06.002},
journal = {Materials Characterization},
issn = {1044-5803},
number = ,
volume = 142,
place = {United States},
year = {2018},
month = {8}
}