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Angular-dependent vortex pinning mechanisms in YBa2Cu3O7 coated conductors and thin films

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11 Author(s)
Civale, L. ; Superconductivity Technology Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 ; Maiorov, B. ; Serquis, A. ; Willis, J.O.
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1655707 

We compare the angular-dependent critical current density (Jc) in YBa2Cu3O7 films deposited on MgO templates grown by ion-beam-assisted deposition (IBAD), and on single-crystal substrates. We identify three angular regimes in which pinning is dominated by different types of correlated and uncorrelated defects. Those regimes are present in all cases, but their extension and characteristics are sample dependent, reflecting differences in texture and defect density. The more defective nature of the films on IBAD turns into an advantage as it results in higher Jc, demonstrating that the performance of the films on single crystals is not an upper limit for the IBAD coated conductors. © 2004 American Institute of Physics.

Published in:
Applied Physics Letters  (Volume:84 ,  Issue: 12 )

Date of Publication: Mar 2004

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