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Surface Reconstruction and Oxide Nucleation Due to Oxygen Interaction with Cu(001) Observed by In Situ Ultra-High Vacuum Transmission Electron Microscopy

Published online by Cambridge University Press:  28 July 2005

Judith C. Yang ,
Mark Yeadon ,
Borys Kolasa  and
J. Murray Gibson
Judith C. Yang
Affiliation:
Frederick Seitz Materials Research Laboratory, 104 South Goodwin Avenue, University of Illinois at Urbana-Champaign, Urbana, IL 61801
Mark Yeadon
Affiliation:
Institute of Materials Research and Engineering, National University of Singapore, Singapore 119260, Republic of Singapore
Borys Kolasa
Affiliation:
Frederick Seitz Materials Research Laboratory, 104 South Goodwin Avenue, University of Illinois at Urbana-Champaign, Urbana, IL 61801
J. Murray Gibson
Affiliation:
Frederick Seitz Materials Research Laboratory, 104 South Goodwin Avenue, University of Illinois at Urbana-Champaign, Urbana, IL 61801
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Abstract

Reconstruction of the Cu(001) surface due to oxygen gas impingement on a clean copper surface was directly observed by in situ UHV-TEM. Strain contrast between differently oriented surface reconstruction domains, assumed to be √2 × 2√2 R45, were clearly visible by this method. The reconstruction precedes the nucleation of Cu2O islands. When Cu2O islands were partially reduced and then re-oxidized, a dwell time before formation of Cu2O was noted, demonstrating that a reconstructed Cu-O surface monolayer is necessary before oxide formation.

Keywords

in situtransmission electron microscopyCuCu2Othin filmsoxidationsurface reconstruction
Type
1998 ASU ELECTRON MICROSCOPY WORKSHOP
Information
Microscopy and Microanalysis , Volume 4 , Issue 3 , June 1998 , pp. 334 - 339
Copyright
© 2005 Microscopy Society of America

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