Please use this identifier to cite or link to this item:
|Title:||Pressure-induced amorphization of β-cristobalite|
|Authors:||Zhang, X. |
|Citation:||Zhang, X., Ong, C.K. (1993). Pressure-induced amorphization of β-cristobalite. Physical Review B 48 (10) : 6865-6870. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.48.6865|
|Abstract:||A constant-pressure molecular-dynamics (MD) study using a three-body potential is employed to study the pressure-induced structural change in β-cristobalite in the pressure range of 0-23 GPa. Our MD results demonstrate that β-cristobalite gradually transforms from a crystalline phase to an amorphous phase in the range 11-15 GPa, and abruptly changes to a sixfold-coordinated amorphous silicon structure at 13.5 GPa. Upon release of pressure, the material does not transform back into β-cristobalite but remains in the amorphous phase with a silicon coordination of nearly six. The behavior of the pressure amorphization of β-cristobalite is found to be similar to that of pressure amorphization of α-quartz. This similarity implies that they may have a similar order-disorder transition mechanism. © 1993 The American Physical Society.|
|Source Title:||Physical Review B|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on May 21, 2018
WEB OF SCIENCETM
checked on Apr 30, 2018
checked on May 18, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.