Grain dynamics in Bi-2223 tapes measured by the 3DXRD microscope

H.F. Poulsen, N.H. Andersen, L.G. Andersen, U. Lienert

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    It is demonstrated how a novel X-ray diffraction method can provide information on the structural dynamics of the individual grains inside a Bi-222-3/Ag tape. A microfocused beam of 80 keV X-rays provides both the necessary spatial resolution and penetration power for in situ studies. In a feasibility study at the European Synchrotron Radiation Facility a green mono-filamentary tape is annealed in air for 12 h at 838.5 degreesC. The Bi-2212 to Bi-2223 transformation is found to be a dynamical process during which individual Bi-2212 grains form, dissociate and "recrystallise" at different times throughout the annealing. The typical reaction time is 1 It. The potential of the method for classifying grains according to orientation, volume and stoichiometry is discussed. (C) 2001 Elsevier Science B.V. All rights reserved.
    Original languageEnglish
    JournalPhysica C: Superconductivity and its Applications
    Volume370
    Pages (from-to)141-145
    ISSN0921-4534
    DOIs
    Publication statusPublished - 2002

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