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Surface alloying of Pd on Cu(111)
被引:16
|作者:
Canzian, A
Mosca, HO
Bozzolo, G
机构:
[1] NASA, Glenn Res Ctr, Cleveland, OH 44135 USA
[2] Ohio Aerosp Inst, Cleveland, OH 44142 USA
[3] UAM, Comis Nacl Energia Atom, RA-1650 San Martin, Buenos Aires, Argentina
[4] Univ Tecnol Nacl, Fac Reg Gral Pacheco, RA-1617 Gral Pacheco, Buenos Aires, Argentina
基金:
美国国家航空航天局;
关键词:
adatoms;
computer simulations;
copper;
palladium;
semi-empirical models and model calculations;
alloys;
surface structure;
morphology;
roughness;
and topography;
D O I:
10.1016/j.susc.2003.12.044
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
A modeling analysis of the growth mode of submonolayer amounts of Pd on Cu(111) for different coverages and temperatures reproduces the known experimental behavior, including the formation of a surface alloy, the presence of subsurface Pd, formation of Pd bands off terrace steps, and weak short range surface ordering. An atom-by-atom analysis of the energetics using the BFS method for alloys provides a simple explanation of the underlying mechanisms leading to the observed behavior. (C) 2004 Elsevier B.V. All rights reserved.
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页码:9 / 22
页数:14
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