Oxygen adsorption sites on the PrB6(100) and LaB6(100) surfaces

N. Yamamoto, E. Rokuta, Y. Hasegawa, T. Nagao, M. Trenary, C. Oshima, S. Otani

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The adsorption of oxygen on the LaB6(100) and PrB6(100) surfaces has been studied with low energy electron diffraction (LEED) and high resolution electron energy loss spectroscopy (HREELS). Room temperature adsorption of oxygen gives a diffuse c(2 × 2) LEED pattern and several vibrational loss features with the most intense peak at 35 meV. Upon annealing to 600°C both the c(2 × 2) LEED pattern and the HREELS loss features become much sharper. Annealing to 700°C produces a sharp (2 × 1) LEED pattern and strong changes in the HREEL spectrum including a large decrease in intensity of the 35 meV peak. The work function of the 2 × 1 structure is 0.9 eV lower than that of the c(2 × 2) structure while Auger measurements show that the oxygen coverage is the same. The results are discussed in terms of possible oxygen adsorption sites.

Original languageEnglish
Pages (from-to)133-142
Number of pages10
JournalSurface Science
Volume348
Issue number1-2
Publication statusPublished - 1996 Mar 1

Keywords

  • Bondes
  • Electron energy loss spectroscopy
  • Low energy electron diffraction (LEED)
  • Low index single crystal surfaces
  • Oxidation
  • Phonons

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

Fingerprint Dive into the research topics of 'Oxygen adsorption sites on the PrB<sub>6</sub>(100) and LaB<sub>6</sub>(100) surfaces'. Together they form a unique fingerprint.

  • Cite this

    Yamamoto, N., Rokuta, E., Hasegawa, Y., Nagao, T., Trenary, M., Oshima, C., & Otani, S. (1996). Oxygen adsorption sites on the PrB6(100) and LaB6(100) surfaces. Surface Science, 348(1-2), 133-142.