X-ray diffraction by standing surface acoustic waves

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).

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

phys stat sol (a) ◽

10.1002/pssa.2211080241 ◽

1988 ◽

Vol 108 (2) ◽

pp. K85-K88 ◽

Cited By ~ 5

Author(s):

R. G. Gabrielyan ◽

H. A. Aslanian

Keyword(s):

Acoustic Waves ◽

Surface Acoustic Waves ◽

X Ray Diffraction ◽

X Ray

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

Journal of Applied Crystallography ◽

10.1107/s0021889803023847 ◽

2004 ◽

Vol 37 (1) ◽

pp. 52-61 ◽

Cited By ~ 18

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.

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Imaging surface acoustic waves on GaAs by X-ray diffraction techniques

1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027) ◽

10.1109/ultsym.1999.849358 ◽

1999 ◽

Cited By ~ 1

Author(s):

W. Sauer ◽

M. Streibl ◽

T.H. Metzger ◽

A.G.C. Haubrich ◽

S. Manus ◽

...

Keyword(s):

Acoustic Waves ◽

Surface Acoustic Waves ◽

X Ray Diffraction ◽

X Ray

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

Acta Crystallographica Section B Structural Science Crystal Engineering and Materials ◽

10.1107/s2052520620014390 ◽

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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X-ray diffraction study of surface acoustic waves and pseudo-surface acoustic waves propagation in La3Ga5.5Ta0.5O14 crystal

Journal of Applied Physics ◽

10.1063/1.4801527 ◽

2013 ◽

Vol 113 (14) ◽

pp. 144909 ◽

Cited By ~ 6

Author(s):

Dmitry Roshchupkin ◽

Luc Ortega ◽

Olga Plotitcyna ◽

Alexei Erko ◽

Ivo Zizak ◽

...

Keyword(s):

Diffraction Study ◽

Acoustic Waves ◽

Surface Acoustic Waves ◽

X Ray Diffraction ◽

X Ray ◽

Waves Propagation

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Observation of sagittal X-ray diffraction by surface acoustic waves in Bragg geometry

Journal of Applied Crystallography ◽

10.1107/s1600576717002977 ◽

2017 ◽

Vol 50 (2) ◽

pp. 525-530 ◽

Cited By ~ 3

Author(s):

Simone Vadilonga ◽

Ivo Zizak ◽

Dmitry Roshchupkin ◽

Emelin Evgenii ◽

Andrei Petsiuk ◽

...

Keyword(s):

Acoustic Waves ◽

Crystal Surface ◽

Surface Acoustic Waves ◽

Angular Separation ◽

Diffraction Theory ◽

Bragg Diffraction ◽

X Ray Diffraction ◽

X Ray ◽

Time Modulation ◽

Bragg Geometry

X-ray Bragg diffraction in sagittal geometry on a Y-cut langasite crystal (La3Ga5SiO14) modulated by Λ = 3 µm Rayleigh surface acoustic waves was studied at the BESSY II synchrotron radiation facility. Owing to the crystal lattice modulation by the surface acoustic wave diffraction, satellites appear. Their intensity and angular separation depend on the amplitude and wavelength of the ultrasonic superlattice. Experimental results are compared with the corresponding theoretical model that exploits the kinematical diffraction theory. This experiment shows that the propagation of the surface acoustic waves creates a dynamical diffraction grating on the crystal surface, and this can be used for space–time modulation of an X-ray beam.

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