Scanning tunneling microscopic investigations of the adsorption and segregation of carbon and sulfur on nickel single crystal surfaces

1995 ◽  
Vol 353 (5-8) ◽  
pp. 757-761 ◽  
Author(s):  
R. B�cker ◽  
G. H�rz
Keyword(s):  
Single Crystal ◽  
Scanning Tunneling ◽  
Crystal Surfaces ◽  
Single Crystal Surfaces ◽  
Nickel Single Crystal ◽  
Microscopic Investigations

Adsorption of hydrogen on nickel single crystal surfaces

1974 ◽  
Vol 60 (11) ◽  
pp. 4528-4540 ◽  
Author(s):  
K. Christmann ◽  
O. Schober ◽  
G. Ertl ◽  
M. Neumann
Keyword(s):  
Single Crystal ◽  
Crystal Surfaces ◽  
Single Crystal Surfaces ◽  
Nickel Single Crystal ◽  
Adsorption Of Hydrogen

scholarly journals Varied Thermal Chemistry of Hydrocarbons on Nickel Single-Crystal Surfaces

2011 ◽  
Vol 54 (1-4) ◽  
pp. 26-33 ◽  
Author(s):  
Sariwan Tjandra ◽  
Hansheng Guo ◽  
Francisco Zaera
Keyword(s):  
Single Crystal ◽  
Crystal Surfaces ◽  
Single Crystal Surfaces ◽  
Thermal Chemistry ◽  
Nickel Single Crystal

Calorimetric heats of adsorption for CO on nickel single crystal surfaces

1993 ◽  
Vol 99 (3) ◽  
pp. 2202-2212 ◽  
Author(s):  
J. T. Stuckless ◽  
N. Al‐Sarraf ◽  
C. Wartnaby ◽  
D. A. King
Keyword(s):  
Single Crystal ◽  
Crystal Surfaces ◽  
Single Crystal Surfaces ◽  
Heats Of Adsorption ◽  
Nickel Single Crystal

SEGREGATION PHENOMENA ON PtxNi1−x LOW INDEX SINGLE CRYSTAL SURFACES STUDIED BY STM

1996 ◽  
Vol 03 (05n06) ◽  
pp. 1831-1845 ◽  
Author(s):  
P. VARGA ◽  
M. SCHMID ◽  
W. HOFER
Keyword(s):  
Single Crystal ◽  
Surface Segregation ◽  
Elevated Temperatures ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Crystal Surfaces ◽  
Single Crystal Surfaces ◽  
Chemical Ordering ◽  
Preferential Sputtering ◽  
Altered Layer

Surface segregation changes the composition of alloy surfaces. It influences both the geometrical and the chemical structure of the surface. In this paper segregation phenomena are shown for low index single crystal surfaces of different PtNi alloys which can be seen only by scanning tunneling microscopy (STM). STM experiments performed with atomic resolution revealed the existence of subsurface dislocation networks. A closer study of the conditions of their existence allowed us to understand the effects of preferential sputtering and annealing on the segregation behavior (i.e. building up a rather stable altered layer and its disappearance only at elevated temperatures). In addition, local chemical ordering in small domains and shifted row reconstructions with a large and varying periodicity (i.e. phenomena that are hardly seen by other methods like e.g. LEED) have been observed.

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