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X‐ray diffraction from perfect silicon crystals distorted by surface acoustic waves
Author(s) -
Tucoulou R.,
Pascal R.,
Brunel M.,
Mathon O.,
Roshchupkin D. V.,
Schelokov I. A.,
Cattan E.,
Remiens D.
Publication year - 2000
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889800006828
Subject(s) - diffraction , surface acoustic wave , acoustic wave , optics , materials science , rayleigh wave , crystal (programming language) , rayleigh scattering , silicon , excitation , surface wave , physics , optoelectronics , quantum mechanics , computer science , programming language
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).