X-ray analysis of surface and pseudo-surface acoustic waves propagation in disordered La3Ga5SiO14 and ordered Ca3TaGa3Si2O14 crystals

X-ray diffraction on disordered La 3 Ga 5 SiO 14 (LGS) and ordered Ca 3 TaGa 3 Si 2 O 14 (CTGS) crystals modulated by surface (SAW) and pseudo-surface acoustic waves (PSAW) with wavelength of A=6 μm was studied using a double axis X-ray diffractometer at the BESSY II synchrotron radiation source. Th...

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Published in2014 European Frequency and Time Forum (EFTF) pp. 67 - 70
Main Authors Plotitcyna, Olga, Roshchupkin, Dmitry, Irzhak, Dmitry, Emelin, Evgenii, Ortega, Luc
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2014
Subjects
Acoustic diffraction
Crystals
Diffraction
Load flow
pseudo-surface acoustic wave
surface acoustic wave
Surface acoustic waves
synchrotron radiation
X-ray diffraction
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Summary:X-ray diffraction on disordered La 3 Ga 5 SiO 14 (LGS) and ordered Ca 3 TaGa 3 Si 2 O 14 (CTGS) crystals modulated by surface (SAW) and pseudo-surface acoustic waves (PSAW) with wavelength of A=6 μm was studied using a double axis X-ray diffractometer at the BESSY II synchrotron radiation source. The propagation of SAW and PSAW leads to sinusoidal modulation of the crystal lattice and gives rise to diffraction satellites on the rocking curve, with the intensity and angular divergence between the diffraction satellites depending on the wavelength and amplitude of the crystal lattice acoustic modulation. The analysis of diffraction spectra enables the determination of the amplitude and acoustic wavelengths, power flow angles of acoustic energy propagation.
DOI:10.1109/EFTF.2014.7331428