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

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

Research output: Contribution to journalArticlepeer-review

22 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
Externally publishedYes

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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