High-Frequency Stroboscopic X-ray Topography Under Surface Acoustic Wave Excitation

1999 ◽  
Vol 591 ◽  
Author(s):  
E. Zolotoyabko
Keyword(s):  
Acoustic Waves ◽  
High Frequency ◽  
Surface Acoustic Waves ◽  
Acoustic Scattering ◽  
Wave Excitation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Individual Wave ◽  
Diffraction Imaging ◽  
Pulse Structure

ABSTRACTThe pulse structure of synchrotron radiation was used in order to carry out timeresolved x-ray diffraction imaging of high-frequency (up to 0.6 GHz) surface acoustic waves propagating through a single crystal. In x-ray topographs, recorded in the stroboscopic mode, the short wavelength (down to 6 μm) individual wave fronts are clearly visible, providing information on the acoustic scattering processes with participation of lattice defects.

scholarly journals Time-resolved coherent X-ray diffraction imaging of surface acoustic waves

2014 ◽  
Vol 47 (5) ◽  
pp. 1596-1605 ◽  
Author(s):  
Jan-David Nicolas ◽  
Tobias Reusch ◽  
Markus Osterhoff ◽  
Michael Sprung ◽  
Florian J. R. Schülein ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Pulse Length ◽  
Grazing Incidence ◽  
High Temporal Resolution ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
Acoustic Frequency ◽  
X Ray ◽  
Diffraction Imaging

Time-resolved coherent X-ray diffraction experiments of standing surface acoustic waves, illuminated under grazing incidence by a nanofocused synchrotron beam, are reported. The data have been recorded in stroboscopic mode at controlled and varied phase between the acoustic frequency generator and the synchrotron bunch train. At each time delay (phase angle), the coherent far-field diffraction pattern in the small-angle regime is inverted by an iterative algorithm to yield the local instantaneous surface height profile along the optical axis. The results show that periodic nanoscale dynamics can be imaged at high temporal resolution in the range of 50 ps (pulse length).

scholarly journals Standing surface acoustic waves in LiNbO3 studied by time resolved X-ray diffraction at Petra III

AIP Advances ◽  
2013 ◽  
Vol 3 (7) ◽  
pp. 072127 ◽  
Author(s):  
T. Reusch ◽  
F. Schülein ◽  
C. Bömer ◽  
M. Osterhoff ◽  
A. Beerlink ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray

X-Ray Diffraction in Crystals Excited by Surface Acoustic Waves

1993 ◽  
pp. 443-446
Author(s):  
Emil ZOLOTOYABKO ◽  
Eli JACOBSOHN ◽  
Dan SHECHTMAN ◽  
Benjamin KANTOR ◽  
Joseph SALZMAN
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
X Ray Diffraction ◽  
X Ray

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).

X-ray diffraction by standing surface acoustic waves

1998 ◽  
Vol 142 (3) ◽  
pp. 432-436 ◽  
Author(s):  
D.V Roshchupkin ◽  
R Tucoulou ◽  
A Masclet ◽  
M Brunel ◽  
I.A Schelokov ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
X Ray Diffraction ◽  
X Ray

On the theory of X-ray diffraction by surface acoustic waves

1988 ◽  
Vol 108 (2) ◽  
pp. K85-K88 ◽  
Author(s):  
R. G. Gabrielyan ◽  
H. A. Aslanian
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
X Ray Diffraction ◽  
X Ray

Dynamical theory for calculations of X-ray spectra from crystals modulated by surface acoustic waves

2004 ◽  
Vol 37 (1) ◽  
pp. 52-61 ◽  
Author(s):  
Igor A. Schelokov ◽  
Dmitry V. Roshchupkin ◽  
Dmitry V. Irzhak ◽  
Remi Tucoulou
Keyword(s):  
Surface Wave ◽  
Crystal Lattice ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Dynamical Theory ◽  
Lattice Deformation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Peak Splitting

The dynamical theory was used to model X-ray diffraction by the YZ-cut of an LiNbO3crystal modulated by surface acoustic waves (SAWs). It includes both the calculation of the crystal lattice deformation, induced by a surface wave of Rayleigh type, and the simulation of X-ray wavefields in the crystal based on Takagi–Taupin equations. A detailed discussion is included on the effect of peak splitting occurring at high acoustic amplitudes. The developed theory entirely describes this effect and proves to be a powerful tool for understanding X-ray diffractometry and topography measurements by SAW-modulated crystals.

Single crystals of ferroelectric lithium niobate–tantalate LiNb1–x Ta x O3 solid solutions for high-temperature sensor and actuator applications

2020 ◽  
Vol 76 (6) ◽  
pp. 1071-1076
Author(s):  
Dmitry Roshchupkin ◽  
Evgenii Emelin ◽  
Olga Plotitcyna ◽  
Fahrtdinov Rashid ◽  
Dmitry Irzhak ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Acoustic Waves ◽  
Inductively Coupled Plasma ◽  
Surface Acoustic Waves ◽  
Czochralski Method ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Inductively Coupled ◽  
Crystal Unit Cell

Ferroelectric LiNb1–x Ta x O3 solid solutions with various Nb/Ta ratio were grown from the melt by the Czochralski method. The exact composition of the grown crystals was determined by inductively coupled plasma atomic mass spectrometry. The dependence of the crystal composition on the composition of the initial melt was obtained and explained by a wide separation between the phase boundaries of the liquid and solid phases on the LiNbO3–LiTaO3 phase diagram. Using high-resolution X-ray diffraction, the parameters a and c of a crystal unit cell were determined (LiNb0.88Ta0.12O3: a = 5.1574 Å and c = 13.8498 Å). Further, the Curie temperature T C of the crystals was measured using the differential scanning calorimetry technique. T C was found to depend on the composition of the crystals that allowed conditions for the monodomainization of the grown crystals to be defined (LiNb0.88Ta0.12O3: T C = 1102°C; LiNb0.33Ta0.67O3: T C = 794°C). Finally, the velocity of surface acoustic waves was determined by scanning electron microscopy and X-ray diffraction techniques (YZ-cut of a LiNb0.88Ta0.12O3 crystal: V = 3440 m s−1).

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