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Low-Temperature Pinning Behavior of MOD YBCO Coated Conductors

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6 Author(s)
Strickland, N.M. ; Ind. Res. Ltd., Lower Hurt, New Zealand ; Talantsev, E.F. ; Xia, J.A. ; Long, N.J.
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We have investigated the temperature and field dependence of the critical current for YBCO coated conductors fabricated by metal-organic deposition. Samples with Dy2O3 or BaZrO3 nanoparticle pinning centers were compared with undoped and Dy-substituted YBCO. While emphasis in development is often limited by practical constraints to measurements at 77 K and self-field, the majority of applications will require operation at much lower temperatures and moderate-to-high magnetic fields. We compare Ic(B,T) for temperatures in the range 20-77 K and magnetic fields up to 7 T. Pinning enhancements observed at 77 K and attributed to nanoparticle additions are less conspicuous at 20 K.

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Applied Superconductivity, IEEE Transactions on  (Volume:21 ,  Issue: 3 )