A bimetallic Ru-Co surface prepared by Ru3(CO)12 adsorption on Co(0001)

Jukka Vaari, J. Lahtinen, Pekka Hautojärvi

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Abstract

We have performed an XPS, TDS, ISS and LEED investigation on the adsorption of ruthenium carbonyl, Ru3(CO)12, on a Co(0001) surface. The adsorption of the carbonyl is molecular at 120 K and its dissociation occurs at 300 K via desorption of CO molecules. The desorption of CO is completed above 500 K, after which XPS and ISS indicate an atomically clean bimetallic surface, and LEED reveals a hexagonal (1 × 1) pattern. The ISS and XPS measurements as a function of Ru coverage indicate the formation of a surface alloy. The lattice constant of the alloy shifts from bulk Co value to bulk Ru value during the Ru deposition. The surface alloy formation is discussed in terms of a Monte Carlo simulation.

Original languageEnglish
Pages (from-to)11-20
Number of pages10
JournalSurface Science
Volume346
Issue number1-3
DOIs
Publication statusPublished - 1 Feb 1996
MoE publication typeA1 Journal article-refereed

Keywords

  • Carbon monoxide
  • Carbonyl
  • Cobalt
  • Computer simulations
  • Growth
  • Low energy ion scattering (LEIS)
  • Low index single crystal surfaces
  • Ruthenium
  • Thermal desorption spectroscopy
  • X-ray photoelectron spectroscopy

Fingerprint

Dive into the research topics of 'A bimetallic Ru-Co surface prepared by Ru3(CO)12 adsorption on Co(0001)'. Together they form a unique fingerprint.

Cite this