Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors
We report on compositional tuning to create excellent field-performance of Jc in “self-doped,” GdBa2Cu3O7−y (GdBCO) coated conductors grown by ultrafast reactive co-evaporation. In order to give excess liquid and Gd2O3, the overall compositions were all Ba-poor and Cu-rich compared to GdBCO. The pre...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2014-08-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/1.4893339 |
| _version_ | 1818143220733837312 |
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| author | J. L. MacManus-Driscoll M. Bianchetti A. Kursumovic G. Kim W. Jo H. Wang J. H. Lee G. W. Hong S. H. Moon |
| author_facet | J. L. MacManus-Driscoll M. Bianchetti A. Kursumovic G. Kim W. Jo H. Wang J. H. Lee G. W. Hong S. H. Moon |
| author_sort | J. L. MacManus-Driscoll |
| collection | DOAJ |
| description | We report on compositional tuning to create excellent field-performance of Jc in “self-doped,” GdBa2Cu3O7−y (GdBCO) coated conductors grown by ultrafast reactive co-evaporation. In order to give excess liquid and Gd2O3, the overall compositions were all Ba-poor and Cu-rich compared to GdBCO. The precise composition was found to be critical to the current carrying performance. The most copper-rich composition had an optimum self-field Jc of 3.2 MA cm−2. A more Gd-rich composition had the best in-field performance because of the formation of low coherence, splayed Gd2O3 nanoparticles, giving Jc (77 K, 1 T) of over 1 MA cm−2 and Jc (77 K, 5 T) of over 0.1 MA cm−2. |
| first_indexed | 2024-12-11T11:28:13Z |
| format | Article |
| id | doaj.art-2048f5b8ed774439908d3f2ca30797b0 |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-12-11T11:28:13Z |
| publishDate | 2014-08-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-2048f5b8ed774439908d3f2ca30797b02022-12-22T01:08:57ZengAIP Publishing LLCAPL Materials2166-532X2014-08-0128086103086103-810.1063/1.4893339002408APMStrong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductorsJ. L. MacManus-Driscoll0M. Bianchetti1A. Kursumovic2G. Kim3W. Jo4H. Wang5J. H. Lee6G. W. Hong7S. H. Moon8Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, Uinted KingdomDepartment of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, Uinted KingdomDepartment of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, Uinted KingdomDepartment of Physics, Ewha Womans University, Seoul 120-750, South KoreaDepartment of Physics, Ewha Womans University, Seoul 120-750, South KoreaMaterials Science and Engineering Program, Texas A&M University, College Station, Texas 77843, USAMaterials Science and Engineering Program, Texas A&M University, College Station, Texas 77843, USAGraduate School of Knowledge Based-Technology and Energy, Korea Polytechnic University, Gyeonggi-do 429-793, South KoreaSuNAM Co. Ltd, Ansung, Gyeonggi-Do 430-817, South KoreaWe report on compositional tuning to create excellent field-performance of Jc in “self-doped,” GdBa2Cu3O7−y (GdBCO) coated conductors grown by ultrafast reactive co-evaporation. In order to give excess liquid and Gd2O3, the overall compositions were all Ba-poor and Cu-rich compared to GdBCO. The precise composition was found to be critical to the current carrying performance. The most copper-rich composition had an optimum self-field Jc of 3.2 MA cm−2. A more Gd-rich composition had the best in-field performance because of the formation of low coherence, splayed Gd2O3 nanoparticles, giving Jc (77 K, 1 T) of over 1 MA cm−2 and Jc (77 K, 5 T) of over 0.1 MA cm−2.http://dx.doi.org/10.1063/1.4893339 |
| spellingShingle | J. L. MacManus-Driscoll M. Bianchetti A. Kursumovic G. Kim W. Jo H. Wang J. H. Lee G. W. Hong S. H. Moon Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors APL Materials |
| title | Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors |
| title_full | Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors |
| title_fullStr | Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors |
| title_full_unstemmed | Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors |
| title_short | Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors |
| title_sort | strong pinning in very fast grown reactive co evaporated gdba2cu3o7 coated conductors |
| url | http://dx.doi.org/10.1063/1.4893339 |
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