A high-resolution neutron powder diffraction study on high-Tc superconductor YBa2Cu3O7

Olli Antson, Pekka Hiismäki, Heikki Pöyry, Antero Tiitta (Corresponding Author), Kari Ullakko, Vitali Trunov, V. Ulyanov

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    A high-resolution neutron time-of-flight diffraction measurement of superconductive Y-Ba-Cu-O (Tco = 91 K) has been performed both at room temperature and at 77 K. Profile refinements of the measured data resulted in a unit cell of stoichiometry YBa2Cu3O7. The positions of the oxygen deficiencies were also determined. Refinement of the anisotropic thermal parameters for the oxygen atoms seem to indicate some changes in the form of the thermal ellipsoids of these atoms when cooled below T.
    Original languageEnglish
    Pages (from-to)757-760
    JournalSolid State Communications
    Issue number5
    Publication statusPublished - 1987
    MoE publication typeA1 Journal article-refereed


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