THE USE OF PHOTON STIMULATED ION DESORPTION SEXAFS IN THE DETERMINATION OF SURFACE STRUCTURE

1986 ◽  
Vol 47 (C8) ◽  
pp. C8-179-C8-183
Author(s):  
G. THORNTON ◽  
D. R. WARBURTON ◽  
I. W. OWEN ◽  
C. H. RICHARDSON ◽  
R. McGRATH ◽  
...  
1990 ◽  
Vol 202 ◽  
Author(s):  
J. Vrijmoeth ◽  
P.M. Zagwijn ◽  
J.W.M. Frenken ◽  
J.F. van der Veen

ABSTRACTThe surface structure of epitaxial NiSi2 films grown on Si (111) has been determined using a new method. The backscattering signals from subsequent Ni layers in the NiSi2 (111) surface are resolved.The topology of the NiSi2 (111) surface is concluded to be bulklike, i.e., it is terminated by a Si – Ni – Si triple layer.


1985 ◽  
Vol 5 (1-2) ◽  
pp. 1-85 ◽  
Author(s):  
Daniel Spanjaard ◽  
Claude Guillot ◽  
Marie-Catherine Desjonquères ◽  
Guy Tréglia ◽  
Jean Lecante

1977 ◽  
Vol 38 (2) ◽  
pp. 387-395 ◽  
Author(s):  
B. J. Mrstik ◽  
R. Kaplan ◽  
T. L. Reinecke ◽  
M. Van Hove ◽  
S. Y. Tong

2013 ◽  
Vol 139 (11) ◽  
pp. 114703 ◽  
Author(s):  
David A. Siegel ◽  
William C. Chueh ◽  
Farid El Gabaly ◽  
Kevin F. McCarty ◽  
Juan de la Figuera ◽  
...  

2015 ◽  
Vol 1 (7) ◽  
pp. e1500441 ◽  
Author(s):  
Shuxin Wang ◽  
Shan Jin ◽  
Sha Yang ◽  
Shuang Chen ◽  
Yongbo Song ◽  
...  

The structure effect is widely present in the catalysis of alloy systems. However, the surface structure of this system is still ambiguous because of the limitations of the current surface characterization tools. We reported the x-ray crystallographic structure of the first and the largest AgAu alloy nanocluster with a doping shell formulated as [Ag46Au24(SR)32](BPh4)2. This nanocluster consists of an achiral bimetallic Ag2@Au18@Ag20 core protected by a chiral Ag24Au6(SR)32 shell. The catalysis experiments further revealed that the surface structure affects the selectivity of products significantly. This is the first case to find the structure effect in atomically precise alloy nanoclusters. Our work will benefit the basic understanding of bimetal distribution, as well as the structure-related catalytic property of alloy nanoclusters at the atomic level.


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