The Library
The coverage dependence of the local structure of C on Ni(100): a structural precursor to adsorbate-induced reconstruction
Tools
UNSPECIFIED (2000) The coverage dependence of the local structure of C on Ni(100): a structural precursor to adsorbate-induced reconstruction. Surface Science, 446 (3). pp. 301-313. ISSN 0039-6028.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Abstract
The local structure around adsorbed carbon atoms on Ni(100) has been determined by C Is scanned-energy mode photoelectron diffraction both at low coverage (0.15 ML) and at 0.5 ML in the 'clock'-reconstructed (2 x 2)p4g phase. At low coverage the C atoms occupy simple undistorted hollow sites; the radial strain of the Ni atoms surrounding the adsorbed carbon, proposed on the basis of STM images, is not found. The comparative study of the (2 x 2)p4g phase confirms the structural parameters of earlier studies, but allows direct comparison between the two phases free from systematic errors. The C-Ni near-neighbour distances to both top and second layer Ni atoms are unchanged by reconstruction, but the Ni-Ni nearest-neighbour distance in the top layer increases significantly. This implies that the adsorbate-induced compressive stress is associated with Ni-Ni, rather than Ni-C, repulsion as has previously been proposed. Special care has been taken to check for coupling of structural parameters in the analysis which might influence the precision of these comparisons, and a new methodology for identifying and assessing such parameter coupling is described. (C) 2000 Elsevier Science B.V. All rights reserved.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
||||
Journal or Publication Title: | Surface Science | ||||
Publisher: | ELSEVIER SCIENCE BV | ||||
ISSN: | 0039-6028 | ||||
Official Date: | 10 February 2000 | ||||
Dates: |
|
||||
Volume: | 446 | ||||
Number: | 3 | ||||
Number of Pages: | 13 | ||||
Page Range: | pp. 301-313 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |