Regensburg 2007 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 12: Symposium “Coated HTS Conductors”
TT 12.10: Vortrag
Dienstag, 27. März 2007, 12:30–12:45, H20
Development of conductive buffer architectures based on IBAD-TiN — •Ruben Hühne, Martin Kidszun, Konrad Güth, Ludwig Schultz, and Bernhard Holzapfel — IFW Dresden, Institute for Metallic Materials, P.O. Box 270116, D-01171 Dresden, Germany
Ion beam assisted deposition (IBAD) offers the possibility to prepare thin textured films on amorphous or non-textured substrates. It was shown within the last decade that thin cube textured MgO and TiN layers can be produced on amorphous or nanocrystalline seed layers using this technique. Especially the results on the in-plane textured growth of TiN are promising for the development of a conducting buffer layer architecture for YBCO coated conductors based on the IBAD approach. Therefore, IBAD-TiN layers have been deposited on Si/Si3N4 as well as on polished Hastelloy tapes using pulsed laser deposition. Different metallic buffer layers as Au or Ir were grown epitaxially on top of the TiN layer showing similar texture values as the IBAD layer. Finally, biaxially textured YBCO layers were achieved using a conductive oxide cap layer. Detailed measurements of the structural and superconducting properties will be presented.