Nanostructure with diffuse streaks in ScRh3B0.6 compound studied by electron microscopy

K. Yubuta, A. Nomura, K. Kouzu, T. Yamasaki, S. Okada, T. Mori, A. Yoshikawa, K. Sugiyama, T. Shishido

Research output: Contribution to journalArticle

Abstract

We have investigated a characteristic nanostructure with sharp diffuse streaks in a Cu3Au/anti-perovskite-type ScRh3B0.6 compound by electron diffraction, and phase- and Z-contrast high-resolution electron microscopy. The electron diffraction patterns reveal diffuse streaks running along <111>* directions and [Formula presented][Formula presented][Formula presented]–type superlattice reflections. The maxima of the streaks can be expressed as a modulation vector q (= α·(af* + bf* + cf*), α = 0.384). The observed HRTEM image taken along the [011] direction with the diffuse streaks indicates a planar domain structure on {111} planes. The superlattice is due to boron/vacancy orderings with planar nanodomains. The diffuse streaks in reciprocal space correspond to well-ordered domains with disturbed periodicity along the <111> directions.

Original languageEnglish
Article number106177
JournalSolid State Sciences
Volume102
DOIs
Publication statusPublished - 2020 Apr

Keywords

  • Boron nonstoichiometry
  • Crystal structure
  • Electron diffraction
  • Superlattice reflection

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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