Atomic structure of a CeO2 grain boundary: The role of oxygen vacancies

Hajime Hojo, Teruyasu Mizoguchi, Hiromichi Ohta, Scott D. Findlay, Naoya Shibata, Takahisa Yamamoto, Yuichi Ikuhara

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105 Citations (Scopus)

Abstract

Determining both cation and oxygen sublattices of grain boundaries is essential to understand the properties of oxides. Here, with scanning transmission electron microscopy, electron energy-loss spectroscopy, and first-principles calculations, both the Ce and oxygen sublattices of a (210)Σ5 CeO2 grain boundary were determined. Oxygen vacancies are shown to play a crucial role in the stable grain boundary structure. This finding paves the way for a comprehensive understanding of grain boundaries through the atomic scale determination of atom and defect locations.

Original languageEnglish
Pages (from-to)4668-4672
Number of pages5
JournalNano Letters
Volume10
Issue number11
DOIs
Publication statusPublished - Nov 10 2010
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Hojo, H., Mizoguchi, T., Ohta, H., Findlay, S. D., Shibata, N., Yamamoto, T., & Ikuhara, Y. (2010). Atomic structure of a CeO2 grain boundary: The role of oxygen vacancies. Nano Letters, 10(11), 4668-4672. https://doi.org/10.1021/nl1029336