High-resolution electron microscopy study of [(Ca,Bi)2CoO 3]0.62CoO2

Kunio Yubuta, Xiangyang Huang, Yuzuru Miyazaki, Tsuyoshi Kajitani

Research output: Contribution to journalArticle

Abstract

A Bi-substituted Co121 single crystal, grown by a flux growth method, is studied by electron diffraction (ED) measurement and high-resolution electron microscopy (HREM). The atomic arrangement of the Bi-substituted crystal is characterized by extended discommensurate boundaries and 3/5-type monoclinic commensurate structural units, which consist of three rock-salt (RS)-type and five CoO2 subunits. The 3/5-type units are similarly observed in a Sr-substituted system. In the HREM image taken with the electron beam parallel to the [0010] direction, two regions, namely, the discommensurate and commensurate regions, are connected parallel to the a-c plane.

Original languageEnglish
Article number094603
JournalJournal of the Physical Society of Japan
Volume77
Issue number9
DOIs
Publication statusPublished - 2008 Sep 1

Keywords

  • Discommensuration
  • Electron diffraction
  • Flux growth method
  • High-resolution image
  • Misfit-layered structure
  • Thermoelectric compound

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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