Abstract

X-ray diffraction on the surface of the YZ cut of a LiNbO3 ferroelectric crystal modulated by standing surface acoustic waves (SAW) was investigated under the total external reflection conditions. It is shown that a metastable superlattice is formed in the near-surface region in the process of the interaction between the incident x-ray radiation and the ferroelectric crystal surface modulated by standing SAW. The metastable superlattice may be stored for a long time period and may be read out by x-ray and laser radiation.

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