Single NbO nano-crystal formation on low temperature annealed Nb(0 0 1) surface

Y. Uehara, T. Fujita, M. Iwami, S. Ushioda

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18 Citations (Scopus)


We have investigated the (001) surface of single crystal niobium annealed at 1000°C in ultra-high vacuum. Oxygen as well as niobium atoms were detected from the surface with the composition ratio of Nb:O = 1:0.9 by X-ray photoemission spectroscopy. Scanning tunneling microscopy observation revealed that the entire surface is covered by small (nanometer in size) protrusions having a pyramid shape with a flat top. Based on these results we have concluded that the protrusions are single nano-crystals of NbO grown epitaxially on the (001) surface of metallic niobium.

Original languageEnglish
Pages (from-to)59-62
Number of pages4
JournalSurface Science
Issue number1-2
Publication statusPublished - 2001 Jan 20


  • Niobium
  • Scanning tunneling microscopy
  • Surface structure morphology, roughness, and topography
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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