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Title: Surfactant-modified diffusion on transition-metal surfaces (reprinted with the addition of the appendices)

Abstract

Wanting to convert surface impurities from a nuisance to a systematically applicable nano-fabrication tool, the authors have sought to understand how such impurities affect self-diffusion on transition-metal surfaces. Their field-ion microscope experiments reveal that in the presence of surface hydrogen, self-diffusion on Rh(100) is promoted, while on Pt(100), not only is it inhibited, but its mechanism changes. First-principles calculations aimed at learning how oxygen fosters perfect layerwise growth on a growing Pt(111) crystal contradict the idea in the literature that it does so by directly promoting transport over Pt island boundaries. The discovery that its real effect is to burn off adventitious adsorbed carbon monoxide demonstrates the predictive value of state-of-the-art calculation methods.

Authors:
;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
752083
Report Number(s):
SAND99-3061
TRN: AH200018%%153
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Mar 2000
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; RHODIUM; PLATINUM; SURFACE PROPERTIES; IMPURITIES; HYDROGEN; SELF-DIFFUSION; CARBON MONOXIDE; REMOVAL

Citation Formats

FEIBELMAN,PETER J., and KELLOGG,GARY LEE. Surfactant-modified diffusion on transition-metal surfaces (reprinted with the addition of the appendices). United States: N. p., 2000. Web. doi:10.2172/752083.
FEIBELMAN,PETER J., & KELLOGG,GARY LEE. Surfactant-modified diffusion on transition-metal surfaces (reprinted with the addition of the appendices). United States. doi:10.2172/752083.
FEIBELMAN,PETER J., and KELLOGG,GARY LEE. Wed . "Surfactant-modified diffusion on transition-metal surfaces (reprinted with the addition of the appendices)". United States. doi:10.2172/752083. https://www.osti.gov/servlets/purl/752083.
@article{osti_752083,
title = {Surfactant-modified diffusion on transition-metal surfaces (reprinted with the addition of the appendices)},
author = {FEIBELMAN,PETER J. and KELLOGG,GARY LEE},
abstractNote = {Wanting to convert surface impurities from a nuisance to a systematically applicable nano-fabrication tool, the authors have sought to understand how such impurities affect self-diffusion on transition-metal surfaces. Their field-ion microscope experiments reveal that in the presence of surface hydrogen, self-diffusion on Rh(100) is promoted, while on Pt(100), not only is it inhibited, but its mechanism changes. First-principles calculations aimed at learning how oxygen fosters perfect layerwise growth on a growing Pt(111) crystal contradict the idea in the literature that it does so by directly promoting transport over Pt island boundaries. The discovery that its real effect is to burn off adventitious adsorbed carbon monoxide demonstrates the predictive value of state-of-the-art calculation methods.},
doi = {10.2172/752083},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {3}
}