Mechanism of Pressure-induced Amorphization.

Atomic-scale mechanism for pressure-induced amorphization of b-eucryptite

We present here a reactive force field based metadynamics study of pressure-induced amorphization in b-eucryptite, a lithium aluminum silicate that exhibits negative thermal expansion, i.e., volumetric contraction upon heating. From our simulations, we found that b-eucryptite amorphizes under a moderate applied pressure of 3 GPa. A careful inspection of the amorphous phase showed that it contai...

Pressure-induced amorphization in the nanoindentation of single crystalline silicon

Large-scale molecular dynamics simulations of nanoindentation on a (100) oriented silicon surface were performed to investigate the mechanical behavior and phase transformation of single crystalline silicon. The direct crystalline-to-amorphous transformation is observed during the nanoindentation with a spherical indenter as long as the applied indentation strain or load is large enough. This a...

Comment on "Pressure-induced amorphization of ZrTiCuNiBe bulk glass-forming

The mechanism of ion induced amorphization in Si

Damage build up and amorphization in Si, induced by 25 keV Si 5 cluster ions and similar mass Cs ions have been studied using transmission electron microscopy and channeling Rutherford backscattering spectrometry. Amorphization is found to be a nucleation and growth process, under the direct impact mechanism. A transition to a completely amorphized state is indicated at a dose of around 17 eV/a...

Pressure-induced structural evolution and amorphization in Eu3Ga5O12