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

Kunio Yubuta; Xiangyang Huang; Yuzuru Miyazaki; Tsuyoshi Kajitani

doi:10.1143/JPSJ.77.094603

High-resolution electron microscopy study of [(Ca,Bi)₂CoO ₃]_0.62CoO₂

Kunio Yubuta, Xiangyang Huang, Yuzuru Miyazaki, Tsuyoshi Kajitani

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

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 language	English
Article number	094603
Journal	journal of the physical society of japan
Volume	77
Issue number	9
DOIs	https://doi.org/10.1143/JPSJ.77.094603
Publication status	Published - 2008 Sep

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

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.",

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AU - Huang, Xiangyang

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AU - Kajitani, Tsuyoshi

PY - 2008/9

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N2 - 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.

AB - 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.

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KW - Flux growth method

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KW - Misfit-layered structure

KW - Thermoelectric compound

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