The Effects of Grain Boundaries on the Current Transport Properties in YBCO-Coated Conductors

We report a detailed study of the grain orientations and grain boundary (GB) networks in Y(2)O(3) films grown on Ni-5 at.%W substrates. Electron back scatter diffraction (EBSD) exhibited different GB misorientation angle distributions, strongly decided by Y(2)O(3) films with different textures. The...

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Autores principales: Yang, Chao, Xia, Yudong, Xue, Yan, Zhang, Fei, Tao, Bowan, Xiong, Jie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2015
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4620109/
https://www.ncbi.nlm.nih.gov/pubmed/26497731
http://dx.doi.org/10.1186/s11671-015-1124-8
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author Yang, Chao
Xia, Yudong
Xue, Yan
Zhang, Fei
Tao, Bowan
Xiong, Jie
author_facet Yang, Chao
Xia, Yudong
Xue, Yan
Zhang, Fei
Tao, Bowan
Xiong, Jie
author_sort Yang, Chao
collection PubMed
description We report a detailed study of the grain orientations and grain boundary (GB) networks in Y(2)O(3) films grown on Ni-5 at.%W substrates. Electron back scatter diffraction (EBSD) exhibited different GB misorientation angle distributions, strongly decided by Y(2)O(3) films with different textures. The subsequent yttria-stabilized zirconia (YSZ) barrier and CeO(2) cap layer were deposited on Y(2)O(3) layers by radio frequency sputtering, and YBa(2)Cu(3)O(7-δ) (YBCO) films were deposited by pulsed laser deposition. For explicating the effects of the grain boundaries on the current carry capacity of YBCO films, a percolation model was proposed to calculate the critical current density (J(c)) which depended on different GB misorientation angle distributions. The significantly higher J(c) for the sample with sharper texture is believed to be attributed to improved GB misorientation angle distributions.
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spelling pubmed-46201092015-10-30 The Effects of Grain Boundaries on the Current Transport Properties in YBCO-Coated Conductors Yang, Chao Xia, Yudong Xue, Yan Zhang, Fei Tao, Bowan Xiong, Jie Nanoscale Res Lett Nano Express We report a detailed study of the grain orientations and grain boundary (GB) networks in Y(2)O(3) films grown on Ni-5 at.%W substrates. Electron back scatter diffraction (EBSD) exhibited different GB misorientation angle distributions, strongly decided by Y(2)O(3) films with different textures. The subsequent yttria-stabilized zirconia (YSZ) barrier and CeO(2) cap layer were deposited on Y(2)O(3) layers by radio frequency sputtering, and YBa(2)Cu(3)O(7-δ) (YBCO) films were deposited by pulsed laser deposition. For explicating the effects of the grain boundaries on the current carry capacity of YBCO films, a percolation model was proposed to calculate the critical current density (J(c)) which depended on different GB misorientation angle distributions. The significantly higher J(c) for the sample with sharper texture is believed to be attributed to improved GB misorientation angle distributions. Springer US 2015-10-26 /pmc/articles/PMC4620109/ /pubmed/26497731 http://dx.doi.org/10.1186/s11671-015-1124-8 Text en © Yang et al. 2015 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Yang, Chao
Xia, Yudong
Xue, Yan
Zhang, Fei
Tao, Bowan
Xiong, Jie
The Effects of Grain Boundaries on the Current Transport Properties in YBCO-Coated Conductors
title The Effects of Grain Boundaries on the Current Transport Properties in YBCO-Coated Conductors
title_full The Effects of Grain Boundaries on the Current Transport Properties in YBCO-Coated Conductors
title_fullStr The Effects of Grain Boundaries on the Current Transport Properties in YBCO-Coated Conductors
title_full_unstemmed The Effects of Grain Boundaries on the Current Transport Properties in YBCO-Coated Conductors
title_short The Effects of Grain Boundaries on the Current Transport Properties in YBCO-Coated Conductors
title_sort effects of grain boundaries on the current transport properties in ybco-coated conductors
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4620109/
https://www.ncbi.nlm.nih.gov/pubmed/26497731
http://dx.doi.org/10.1186/s11671-015-1124-8
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