Modeling flux pinning in thin undoped and BazRo3-doped YBCO films

P. Paturi, M. Irjala, H. Huhtinen, Asger Bech Abrahamsen

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    Abstract

    A simple model based on distributions of twin boundaries, dislocations, and BaZrO3 nanorods is presented to describe the Jc properties of undoped and BaZrO3 (BZO)-doped YBa2Cu3Ox thin films. The model accurately describes the shape of Jc(B,T) curves of the films, when the pinning site distributions are taken from distributions of twin spacings and BZO nanorods from transmission electron microscope images. Thus, assuming that the model can be used for prediction of the Jc properties, we conclude that for enhancement of undoped films more crystalline defects are needed and for doped films a dopant that would create slightly larger rods would be optimal. ©2009 American Institute of Physics
    Original languageEnglish
    JournalJournal of Applied Physics
    Volume105
    Issue number2
    Pages (from-to)023904
    ISSN0021-8979
    DOIs
    Publication statusPublished - 2009

    Bibliographical note

    Copyright (2009) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

    Keywords

    • Materials research
    • Superconducting materials for the energy sector

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