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    Pinning lattice: Effect of rhenium doping on the microstructural evolution from Tl-2212 to Hg-1212 films during cation exchange

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    Issue Date
    2004-08-15
    Author
    Wu, Judy Z.
    Zhao, H.
    Publisher
    AMER INST PHYSICS
    Type
    Article
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    Abstract
    In a cation exchange process developed recently by some of us, epitaxial HgBa2CaCu2O6 films can be obtained by diffusing volatile Tl cations out of, and simultaneously diffusing Hg cations into, the crystalline lattice of epitaxial Tl2Ba2CaCu2O8 (Tl-2212) precursor films. When a large number of Tl cations diffuse out from the same local area of the precursor lattice simultaneously, it causes lattice collapse locally and leads to formation of pores of micrometer dimension. To eliminate such large-scale lattice collapse, "lattice pins" were introduced on the original Tl-2212 lattice by partially replacing volatile Tl cations with nonvolatile Re ones. Since the Re cations remain on the lattice during the Tl-Hg cation exchange, they pin the lattice around them. HgBa2CaCu2O6 films obtained from these Re-doped Tl-2212 precursor films have much improved microstructures with the pore dimension reduced by an order of magnitude. (C) 2004 American Institute of Physics.
    URI
    http://hdl.handle.net/1808/1717
    DOI
    https://doi.org/10.1063/1.1771473
    Collections
    • Distinguished Professors Scholarly Works [918]
    • Physics & Astronomy Scholarly Works [1744]
    Citation
    Zhao, H; Wu, JZ. Pinning lattice: Effect of rhenium doping on the microstructural evolution from Tl-2212 to Hg-1212 films during cation exchange. JOURNAL OF APPLIED PHYSICS. AUG 15 2004. 96(4): 2136-2140.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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