Grazing incidence diffraction of X-rays at a Si single crystal surface: Comparison of theory and experiment

1987 ◽  
Vol 69 (2-3) ◽  
pp. 303-311 ◽  
Author(s):  
N. Bernhard ◽  
E. Burkel ◽  
G. Gompper ◽  
H. Metzger ◽  
J. Peisl ◽  
...  
Keyword(s):  
Single Crystal ◽  
Crystal Surface ◽  
Grazing Incidence ◽  
X Rays ◽  
Single Crystal Surface ◽  
Grazing Incidence Diffraction ◽  
Theory And Experiment ◽  
Surface Comparison

Phase Transitions Near Surfaces Studied By Grazing Incidence Diffraction of X-Rays

1990 ◽  
Vol 208 ◽  
Author(s):  
L. Mailander ◽  
H. Dosch ◽  
J. Peisl ◽  
R. L. Johnson
Keyword(s):  
Phase Transitions ◽  
Transition Temperature ◽  
Single Crystal ◽  
Critical Behavior ◽  
Scaling Laws ◽  
Grazing Incidence ◽  
Critical Surface ◽  
X Rays ◽  
Near Surface ◽  
Grazing Incidence Diffraction

ABSTRACTWe review two different experiments in order to demonstrate the power of grazing incidence diffraction of x-rays in studying phase transitions near surfaces and to show that it is well suited to get information on structural details even from subsurface layers: We have measured the near surface critical scattering at the continuous order disorder transition of an Fe3Al single crystal which provides information on modifications of critical behavior of a bulk transition near a surface. These modifications are detectable to a considerable depth due to the diverging range of correlations. We determined three different critical surface exponents which allow, for the first time, to confirm scaling laws for near surface critical behavior.- The experiment at a (100) surface of a discontinuous ordering Cu3Au single crystal shows that the surface is wetted by a disordered layer below the transition temperature. By means of the adjustable depth sensitivity of grazing incidence scattering we were able to demonstrate that the thickness of this layer increases logarithmically when approaching the transition temperature.

scholarly journals Redox-driven atomic-scale changes in mixed catalysts: VOX/WOX/α-TiO2 (110)

RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 64608-64616 ◽  
Author(s):  
Z. Feng ◽  
M. E. McBriarty ◽  
A. U. Mane ◽  
J. Lu ◽  
P. C. Stair ◽  
...  
Keyword(s):  
Single Crystal ◽  
Crystal Surface ◽  
Oxide Catalysts ◽  
Atomic Scale ◽  
Redox Behavior ◽  
Single Crystal Surface ◽  
Tungsten Oxides ◽  
Mixed Monolayer ◽  
X Ray

X-ray study of vanadium–tungsten mixed-monolayer-oxide catalysts grown on the rutile α-TiO2 (110) single crystal surface shows redox behavior not observed for lone supported vanadium or tungsten oxides.

Study of Atomic Steps on the Single Crystal Surface by Grazing Ion Scattering

2001 ◽  
Vol 672 ◽  
Author(s):  
A.A. Dzhurakhalov
Keyword(s):  
Computer Simulation ◽  
Single Crystal ◽  
Crystal Surface ◽  
Grazing Angle ◽  
Single Crystal Surface ◽  
Medium Energy ◽  
Ion Scattering ◽  
Energy Distributions ◽  
Atomic Steps ◽  
Simulation Results

The features of the correlated glancing scattering of medium energy ions by the imperfect surface of a single crystal have been investigated by computer simulation It has been shown that, from the correlation of the experimental and calculated energy distributions of the scattered particles, one may determine a spatial extension of the isolated atomic steps on the single crystal surface damaged by the ion bombardment. The presence of atomic steps on the surface lead to increase of the capture probability of channeling ions in the layers under the steps and to increase of probability of their dechanneling. The obtained computer simulation results show that dechanneled ions form characteristic peaks in the angular and energy distributions of scattered particles. Character of ions movement under the step (their ranges, energy losses and dechanneling) is determined both the grazing angle and capture angle under the step.

Borate nonlinear optical single crystal surface finishing by argon cluster ion sputtering

2021 ◽  
pp. 101520
Author(s):  
N.G. Korobeishchikov ◽  
I.V. Nikolaev ◽  
V.V. Atuchin ◽  
I.P. Prosvirin ◽  
A. Tolstogouzov ◽  
...  
Keyword(s):  
Single Crystal ◽  
Nonlinear Optical ◽  
Crystal Surface ◽  
Surface Finishing ◽  
Ion Sputtering ◽  
Single Crystal Surface ◽  
Cluster Ion

scholarly journals Plasmon Spectroscopy of W (100) Single Crystal Surface

2020 ◽  
Vol 42 (4) ◽  
pp. 471-485
Author(s):  
M. O. Vasylyev ◽  
◽  
E. G. Len ◽  
V. M. Kolesnik ◽  
I. M. Makeeva ◽  
...  
Keyword(s):  
Single Crystal ◽  
Crystal Surface ◽  
Single Crystal Surface
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