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Fig. 1: Schematic illustration of the Coated Conductor architecture

By Bernhard Holzapfel, Chuanbing Cai, Laura Fernandez, Thomas Gemming, Jens Hänisch and Ludwig Schultz


In this contribution we report on the improvement of pinning and critical current density in High Temperature Superconductor (HTSC) films that can be used for Coated Conductors, the 2 nd generation of HTSC tapes. Pure and mixed REBa 2Cu 3O x (RE: Gd, Eu, Nd) films and heterostructures were prepared by Pulsed Laser Deposition (PLD) and investigated regarding their current carrying capabilities. A strong improvement in the critical current density and an increased irreversibility field was observed for the mixed RE123 films. This improvement is due to stress fields introduced into the lattice by statistical arrangement of the differently sized RE-ions. In multilayer heterostructures, these effects have also significant implications on the anisotropy of J c in the presence of magnetic fields

Year: 2011
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