X-ray rocking curves on inhomogeneous surface layers on Si single crystals

1982 ◽  
Vol 32 (7) ◽  
pp. 750-766 ◽  
Author(s):  
V. Holý ◽  
J. Kuběna
Keyword(s):  
Single Crystals ◽  
Surface Layers ◽  
Inhomogeneous Surface ◽  
X Ray

The analysis of strained surface layers on single crystals utilizing divergent‐beam x‐ray patterns

1981 ◽  
Vol 52 (9) ◽  
pp. 5496-5500 ◽  
Author(s):  
R. J. Schutz ◽  
L. R. Testardi ◽  
S. Weissmann
Keyword(s):  
Single Crystals ◽  
Surface Layers ◽  
Divergent Beam ◽  
X Ray ◽  
Ray Patterns

Some Developments in the X-ray Analysis of Single-Crystals

1927 ◽  
Vol 23 (5) ◽  
pp. 561-577
Author(s):  
R. L. Aston
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Incident Beam ◽  
X Rays ◽  
Surface Layers ◽  
X Ray ◽  
Axis Of Rotation ◽  
Component Wave

A method has been devised by Dr Alex Müller for determining the orientation of a single-crystal of metal by photographic measurement of the reflection of characteristic X-rays from surface layers. The incident beam passes perpendicularly through an axis of rotation around which the crystal is turned until a reflection is obtained with one of the component wave-lengths of the X-rays.

The method of integral characteristics in X-ray diffraction studies of the structure of the surface layers of single crystals

1981 ◽  
Vol 64 (2) ◽  
pp. 435-442 ◽  
Author(s):  
V. G. Kohn ◽  
M. V. Kovalchuk ◽  
R. M. Imamov ◽  
E. F. Lobanovich
Keyword(s):  
Single Crystals ◽  
X Ray Diffraction ◽  
Surface Layers ◽  
X Ray ◽  
Integral Characteristics

Zone-axis ALCHEMI for the rapid assessment of site occupancies in garnets

1986 ◽  
Vol 44 ◽  
pp. 706-707
Author(s):  
M.T. Otten ◽  
P.R. Buseck
Keyword(s):  
Single Crystals ◽  
Rapid Assessment ◽  
Site Occupancy ◽  
Zone Axis ◽  
Synthetic Compounds ◽  
X Ray ◽  
Large Group ◽  
Crystallographic Planes

ALCHEMI (Atom Location by CHannelling-Enhanced Microanalysis) is a TEM technique for determining site occupancies in single crystals. The method uses the channelling of incident electrons along specific crystallographic planes. This channelling results in enhanced x-ray emission from the atoms on those planes, thereby providing the required site-occupancy information. ALCHEMI has been applied with success to spinel, olivine and feldspar. For the garnets, which form a large group of important minerals and synthetic compounds, the channelling effect is weaker, and significant results are more difficult to obtain. It was found, however, that the channelling effect is pronounced for low-index zone-axis orientations, yielding a method for assessing site occupancies that is rapid and easy to perform.

The efficiency of application of virtual cross-sections method and hypotheses MELS in problems of wave signal propagation in elastic waveguides with rough surfaces

2016 ◽  
pp. 3564-3575 ◽  
Author(s):  
Ara Sergey Avetisyan
Keyword(s):  
Half Space ◽  
Cross Sections ◽  
Classical Method ◽  
Signal Propagation ◽  
Elastic Half Space ◽  
Layered Systems ◽  
Surface Layers ◽  
Inhomogeneous Surface ◽  
Wave Signal ◽  
The Impact

The efficiency of virtual cross sections method and MELS (Magneto Elastic Layered Systems) hypotheses application is shown on model problem about distribution of wave field in thin surface layers of waveguide when plane wave signal is propagating in it. The impact of surface non-smoothness on characteristics of propagation of high-frequency horizontally polarized wave signal in isotropic elastic half-space is studied. It is shown that the non-smoothness leads to strong distortion of the wave signal over the waveguide thickness and along wave signal propagation direction as well.  Numerical comparative analysis of change in amplitude and phase characteristics of obtained wave fields against roughness of weakly inhomogeneous surface of homogeneous elastic half-space surface is done by classical method and by proposed approach for different kind of non-smoothness.

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