Investigation of surface acoustic wave fields in silicon crystals by x-ray diffraction: A dynamical theory approach

2005 ◽  
Vol 97 (11) ◽  
pp. 113505 ◽  
Author(s):  
R. Tucoulou ◽  
O. Mathon ◽  
C. Ferrero ◽  
V. Mocella ◽  
D. V. Roshchupkin ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Dynamical Theory ◽  
Theory Approach ◽  
X Ray Diffraction ◽  
Wave Fields ◽  
X Ray ◽  
Silicon Crystals

The dynamical theory of diffraction in a crystal modulated by a surface acoustic wave in the case of spatially restricted X-ray beams

2019 ◽  
Vol 52 (6) ◽  
pp. 1289-1298
Author(s):  
Vasily I. Punegov
Keyword(s):  
Numerical Simulation ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Wave Model ◽  
Dynamical Theory ◽  
Instrumental Function ◽  
X Ray Diffraction ◽  
Reciprocal Space Mapping ◽  
X Ray ◽  
Recurrent Relations

The dynamical theory of X-ray diffraction in a crystal modulated by a surface acoustic wave (SAW) is developed for spatially restricted beams. It is shown that this approach is applicable to X-ray reciprocal space mapping. Rayleigh's surface-wave model is used to describe ultrasonic excitation. Based on the recurrent relations, a numerical simulation of the dynamical diffraction in a crystal modulated by a SAW is performed. Within the framework of the triple-axis diffraction scheme, the effect of the instrumental function on X-ray diffraction data is studied.

Dynamical Theory for Simultaneous X-Ray Diffraction

1966 ◽  
Vol 10 ◽  
pp. 67-79
Author(s):  
P. Penning
Keyword(s):  
Experimental Data ◽  
Plane Wave ◽  
Quantitative Data ◽  
Reasonable Agreement ◽  
Dynamical Theory ◽  
Inversion Symmetry ◽  
Surprising Result ◽  
X Ray Diffraction ◽  
Wave Fields ◽  
X Ray

AbstractComplete dynamical solutions for three coupled plane-wave components in crystal structures with inversion symmetry have been found. After reviewing briefly the dynamical solutions for wave fields with two coupled plane-wave components, the results for the three-beam case are discussed in qualitative terms. Attention is paid to singular points and lines on the ω-surface, and to the attenuation of the mode-intensity because of absorption. The most surprising result is that in the case one of the reflections is forbidden (Umweganregung) the absorption is reduced in comparison with the adjoining two-beam cases. Experimental data are in reasonable agreement with the theory. Quantitative data are presented for a few three-beam cases of simultaneous diffraction of Cu Kα. radiation in germanium.

X‐ray diffraction study of surface acoustic wave device under acoustic excitation

1993 ◽  
Vol 73 (12) ◽  
pp. 8647-8649 ◽  
Author(s):  
E. Zolotoyabko ◽  
E. Jacobsohn ◽  
D. Shechtman ◽  
B. Kantor ◽  
J. Salzman
Keyword(s):  
Acoustic Wave ◽  
Diffraction Study ◽  
Surface Acoustic Wave ◽  
Acoustic Excitation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Surface Acoustic Wave Device ◽  
Acoustic Wave Device ◽  
Wave Device

X-ray diffraction from perfect silicon crystals distorted by surface acoustic waves

2000 ◽  
Vol 33 (4) ◽  
pp. 1019-1022 ◽  
Author(s):  
R. Tucoulou ◽  
R. Pascal ◽  
M. Brunel ◽  
O. Mathon ◽  
D. V. Roshchupkin ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Acoustic Waves ◽  
Crystal Surface ◽  
Source Region ◽  
Surface Acoustic Waves ◽  
X Ray Diffraction ◽  
Zno Film ◽  
Near Surface ◽  
X Ray

High-resolution X-ray diffraction measurements were carried out on ZnO/Si devices under surface acoustic wave excitation and revealed some very clear satellite diffraction peaks that are obtained from the sinusoidal modulation of the near-surface region. This experiment shows that the propagation of a Rayleigh surface acoustic wave in a perfect crystal acts as a dynamical diffraction grating. The variation of the acoustic velocity has been followed across the crystal surface from the acoustic source region (beneath the ZnO film) to the far field region (not covered by the ZnO film).

Coherent and diffuse X-ray scattering in crystals modulated by a surface acoustic wave

2010 ◽  
Vol 43 (3) ◽  
pp. 520-530 ◽  
Author(s):  
Vasily I. Punegov ◽  
Yakov I. Nesterets ◽  
Dmitry V. Roshchupkin
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Diffuse Scattering ◽  
Block Size ◽  
Diffraction Theory ◽  
Crystal Defects ◽  
Reciprocal Space ◽  
X Ray Diffraction ◽  
X Ray ◽  
Main Diffraction Peak

Equations describing the coherent and diffuse scattering in a crystal modulated by a surface acoustic wave (SAW) are derived using the dynamical X-ray diffraction theory. The effect of depth attenuation of the Rayleigh surface wave amplitude on the crystal rocking curve profiles is investigated. Results of the numerical simulation of the dynamical diffraction in a mosaic crystal modulated by a SAW, taking into account a block size distribution, are presented. It is shown that the diffuse scattering is distributed in the reciprocal space not only in the vicinity of the main diffraction peak but also about the satellite diffraction peaks, and this distribution depends on the size fluctuations of the crystal defects. Theoretical reciprocal space maps and rocking curves are compared with the corresponding experimental results.

Characterization of Stress at a Ceramic/Metal Joined Interface by the Vz Technique of Scanning Acoustic Microscopy

2002 ◽  
Vol 124 (3) ◽  
pp. 336-342 ◽  
Author(s):  
Chiaki Miyasaka ◽  
Bernard R. Tittmann ◽  
Shun-Ichiro Tanaka
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Wave Velocity ◽  
Dissimilar Materials ◽  
Acoustic Microscopy ◽  
Scanning Acoustic Microscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Wave Velocities

It is well known that the process of heating and then cooling dissimilar materials introduces considerable stress at and near the interface. In this article, first, the surface wave velocity distributions obtained with the Vz curve technique were found to compare well with residual stress distribution measured by the finely collimated X-ray diffraction technique. Second, a delamination was introduced at the interface. The Vz curve technique was then used again to measure the surface acoustic wave velocity along the interface. The defective specimens showed significantly different patterns of surface acoustic wave velocities. Thus, this study presents useful guidelines in discriminating between sound and defective ceramic/metal joints by scanning acoustic microscopy.

X-ray diffraction analysis of the surface acoustic wave propagation in langatate crystal

2008 ◽  
Vol 94 (3) ◽  
pp. 477-484 ◽  
Author(s):  
D. V. Roshchupkin ◽  
A. I. Erko ◽  
L. Ortega ◽  
D. V. Irzhak
Keyword(s):  
Wave Propagation ◽  
Acoustic Wave ◽  
Diffraction Analysis ◽  
Surface Acoustic Wave ◽  
X Ray Diffraction ◽  
Acoustic Wave Propagation ◽  
X Ray
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