High resolution electron microscopy of high-tc superconductor y-ba-cu-o

Kenji Hiraga, Daisuke Shindo, Makoto Hirabayashi, Masae Kikuchi, Yasuhiko Syono

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    21 Citations (Scopus)

    Abstract

    Two kinds of Y-Ba-Cu-O compounds with zero resistance temperatures of 88.0 and 91.3 K were examined by high resolution electron microscopy. In a lattice image of the compound with Tc = 88 K taken with the incident beam parallel to the c axis, inhomogeneous distribution of linear contrast consisting of bright-dot arrays, which seem to result from shortrange ordering of oxygen vacancies or metal atoms, was observed. This was not observed in lattice images of the compound with Tc = 91.3K. A structure image of the compound with Tc = 91.3K was analyzed by the comparison with a structure model proposed by neutron diffraction, with the aid of computer simulation.

    Original languageEnglish
    Pages (from-to)261-269
    Number of pages9
    JournalMicroscopy
    Volume36
    Issue number4
    DOIs
    Publication statusPublished - 1987 Jan 1

    Keywords

    • Defects
    • High resolution electron microscopy
    • High-T superconductor
    • Oxide superconductor

    ASJC Scopus subject areas

    • Structural Biology
    • Instrumentation
    • Radiology Nuclear Medicine and imaging

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