Berlin 2015 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 21: Superconductivity: Poster Session

TT 21.1: Poster

Montag, 16. März 2015, 15:00–18:00, Poster B

Pinning centres in ISD-MgO coated conductors — •Benjamin H. Stafford1,2, Oleksiy Troshyn1, Jens Hänisch3, Rueben Hühne2, Veit Große1, Markus Bauer1, Werner Prusseit1, Bernhard Holzapfel3, and Ludwig Schultz21THEVA Dünnschichttechnik GmbH, Rote-Kreuz-Str. 8, D-85737 Ismaning, Germany — 2Institute for Metallic Materials, IFW Dresden, PO Box 27 01 16, D-01171 Dresden, Germany — 3Institute for Technical Physics, Karlsruhe Institute of Technology (KIT), PO Box 36 40, D-76021 Karlsruhe, Germany

High temperature superconductor (HTS) films on long length metallic tapes, known as coated conductors, are quickly becoming a reality for use in superconducting motors and generators. One way to ensure good biaxial texturing of the HTS film is via the use of a buffer layer deposited by inclined substrate deposition (ISD). In order to improve the in-field performance of such coated conductors, nanoscale inclusions can be incorporated into the HTS layer to pin flux vortices. Until now it is not known how effectively such pinning centres can be incorporated into HTS films grown on ISD substrates due to the unique growth process of the HTS layer. In this work we have prepared GdBa2Cu3O7−x films grown heteroepitaxially on ISD-MgO buffered tapes via e-beam evaporation. We show how such nanoscale inclusions are arranged within the film. We also present data for the in-field critical current anisotropy of such films, displaying the effectiveness of the incorporated inclusions as pinning centres.

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DPG-Physik > DPG-Verhandlungen > 2015 > Berlin