Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors
Source abstract
Abstract
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.
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Research context
OpenAlex topics: Physics of Superconductivity and Magnetism · Advanced Condensed Matter Physics · Superconductivity in MgB2 and Alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
University of Cambridge 1 Department of Materials Science and Metallurgy, , Cambridge CB2 3QZ, Uinted Kingdom
Ewha Womans University 2 Department of Physics, , Seoul 120-750, South Korea
Texas A&M University 3 Materials Science and Engineering Program, , College Station, Texas 77843, USA
Korea Polytechnic University 4 Graduate School of Knowledge Based-Technology and Energy, , Gyeonggi-do 429-793, South Korea
SuNAM Co. Ltd 5 , Ansung, Gyeonggi-Do 430-817, South Korea
References (24)
Show source-provided references
1. Adv. Supercond. VIII10.2172/951094 ↗
2. Supercond. Cryog. · 2012 · 14 · 510.9714/sac.2012.14.4.005 ↗
3. Physica C · 2005 · 372–376 · 880
4. Supercond. Sci. Technol. · 2010 · 23 · 01401810.1088/0953-2048/23/1/014018 ↗
5. M. R. Beasley and R. H. Hammond, DOE Annual Report (Award No. DE-FC07-03ID14510), 2005.
6. Appl. Phys. Lett. · 2007 · 90 · 26191710.1063/1.2753118 ↗
7. M. R. Beasley and R. H. Hammond, Final DOE Scientific/Technical Report 2003–2008. (Award No. DE-FC07-03ID14510), 2009.
8. Supercond. Cryog. · 2012 · 14 · 2810.9714/sac.2012.14.4.028 ↗
9. Supercond. Sci. Technol. · 2014 · 27 · 04401810.1088/0953-2048/27/4/044018 ↗
10. Supercond. Sci. Technol. · 2008 · 21 · 03400310.1088/0953-2048/21/3/034003 ↗
11. 2013
12. Physica C · 1995 · 241 · 40110.1016/0921-4534(94)02369-7 ↗
13. Physica C · 2002 · 377 · 58510.1016/S0921-4534(02)00630-5 ↗
14. J. Mater. Res. · 2004 · 19 · 97710.1557/JMR.2004.0127 ↗
15. Mater. Res. Soc. Symp. Proc. · 2012 · 143410.1557/opl.2012.1406 ↗
16. J. Res. Natl. Inst. Stand. Technol. · 1998 · 103 · 37910.6028/jres.103.023 ↗
17. Supercond. Sci. Technol. · 2004 · 17 · 114410.1088/0953-2048/17/10/010 ↗
18. Phys. Rev. B · 1990 · 41 · 403810.1103/PhysRevB.41.4038 ↗
19. Appl. Phys. Lett. · 2004 · 84 · 212110.1063/1.1655707 ↗
20. Adv. Mater. · 2008 · 20 · 39110.1002/adma.200700919 ↗
21. Supercond. Sci. Technol. · 2003 · 16 · 115210.1088/0953-2048/16/10/305 ↗
22. Physica C · 2003 · 399 · 12010.1016/S0921-4534(03)01299-1 ↗
23. Supercond. Sci. Technol. · 2007 · 20 · S22310.1088/0953-2048/20/9/S17 ↗
24. See supplementary material at http://dx.doi.org/10.1063/1.4893339 for showing x-ray and cross sectional TEM analyses of the films of this study.