Z Chen et al 2009 Supercond. Sci. Technol. 22 055013 doi:10.1088/0953-2048/22/5/055013
A high critical current density MOCVD coated conductor with strong vortex pinning centers suitable for very high field use
Z Chen1, F Kametani1, Y Chen2, Y Xie2, V Selvamanickam2 and D C Larbalestier1
Show affiliationsWe have made extensive low temperature and high field evaluations of a recent 2.1 µm thick coated conductor (CC) grown by metal–organic chemical vapor deposition (MOCVD) with a view to its use for high field magnet applications, for which its very strong Hastelloy substrate makes it very suitable. This conductor contains dense three-dimensional (Y,Sm)2O3 nanoprecipitates, which are self-aligned in planes tilted ~7° from the tape plane. Very strong vortex pinning is evidenced by high critical current density Jc values of ~3.1 MA cm−2 at 77 K and ~43 MA cm−2 at 4.2 K, and by a strongly enhanced irreversibility field Hirr, which reaches that of Nb3Sn (~28 T at 1.5 K) at 60 K, even in the inferior direction of 
axis. At 4.2 K, Jc values are ~15% of the depairing current density Jd, much the highest of any superconductor suitable for magnet construction.
- PACS
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81.15.Gh Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, etc.)
- Subjects
- Dates
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Issue 5 (May 2009)
Received 2 December 2008, in final form 5 March 2009
Published 7 April 2009
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A high critical current density MOCVD coated conductor with strong vortex pinning centers suitable for very high field use
Z Chen et al 2009 Supercond. Sci. Technol. 22 055013
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-
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-
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-
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-
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-
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-
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-
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