STRESS-INDUCED ANISOTROPY IN CHALCOGENIDE GLASSES .2. STRUCTURAL STUDIES

Structural changes and mechanisms of stress-induced squeezing phenomena in some amorphous materials have been studied in comparison with the behavior following hydrostatic compression and the features observed in stressed crystalline solids. X-ray diffraction patterns of squeezed As2S3 and As are in support of anisometric medium-range structural orders. The threshold pressure of the squeezing increases with the average coordination number in amorphous materials, but in crystalline solids the phenomenon is not observed. The squeezing mechanism can be connected with plastic deformations and the non-existence of grain boundaries in amorphous structures. © 1990.