Effect of pressure on photo-induced interdiffusion in amorphous chalcogenide nanomultilayers

摘要

The effect of hydrostatic pressure on photo-induced interdiffusion in Se/As2S3 and As0.2Se0.8/As0.2S0.8 nanomultilayers has been studied in the pressure range of 0-0.9 GPa. The photo-bleaching due to the mixing was in situ detected and used to follow the interdiffusion kinetics. We have observed that the applied pressure suppressed the diffusion rate. The activation volumes of the interdiffusion process in both systems are in the range of 0.40-0.45 in average atomic volume units. (c) 2006 Elsevier B.V. All rights reserved.