Anisotropic c-axis pinning in interfacial self-assembled nanostructured trifluoracetate- YBa<inf>2</inf> Cu<inf>3</inf> O<inf>7-x</inf> films

J. Gutierrez, T. Puig, M. Gibert, C. Moreno, N. Rom̀, A. Pomar, X. Obradors

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    Abstract

    An all chemical route has been used to produce substrates-nanostructured by self-assembled oxide nanoislands-and to grow YBa2 Cu3 O7-x (YBCO) films on top. A great increase in the superconducting properties has been observed at high temperatures and magnetic fields parallel to the YBa2 Cu3 O7-x c -axis. The vortex pinning properties and the defects induced in the YBa2 Cu3 O7-x matrix have been investigated. We show that extended defects along the c -axis, induced in the YBCO matrix by the interfacial nanostructures, lay at the origin of the improved performances. © 2009 American Institute of Physics.
    Original languageEnglish
    Article number172513
    JournalApplied Physics Letters
    Volume94
    Issue number17
    DOIs
    Publication statusPublished - 11 May 2009

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