OBSERVATION OF DOMAIN-STRUCTURE AND COARSENING AT CU-PD ALLOY VICINALSURFACES

Authors
GOAPPER S BARBIER L SALANON B LOISEAU A TORRELLES X
Citation
S. Goapper et al., OBSERVATION OF DOMAIN-STRUCTURE AND COARSENING AT CU-PD ALLOY VICINALSURFACES, Physical review. B, Condensed matter, 57(19), 1998, pp. 12497-12500
Citations number
24
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
57
Issue
19
Year of publication
1998
Pages
12497 - 12500
Database
ISI
SICI code
0163-1829(1998)57:19<12497:OODACA>2.0.ZU;2-B
Abstract
The morphology of a vicinal surface of an A(3)B-type ordered alloy [Cu 83Pd17(1,1,11)] is investigated by STM and He diffraction. In the orde red state of the alloy, domains with paired steps are observed and STM images reveal the link between the surface structure and the chemical ly ordered underlying domains. The surface domain size grows during ag ing as t(1/2). The activation energy for this coarsening process is fo und to be 2.2 eV. This value is close to the one obtained for bulk ord ering.