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Nanoindentation-induced phase transformation in relaxed and unrelaxed ion-implanted amorphous germanium

Oliver, D. J.; Bradby, J. E.; Ruffell, S.; Williams, J. S.; Munroe, P.

Description

We have investigated nanoindentation-induced plastic deformation in amorphousgermanium (a-Ge) prepared by high-energy self-ion implantation. Using cross-sectional transmission electron microscopy, micro-Raman spectroscopy, and force-displacement curve analysis, we find strong evidence for a pressure-induced metallic phase transformation during indentation. Crystalline diamond-cubic Ge-I is observed in residual indents. Relaxed and unrelaxed structural states of a-Ge exhibit similar behavior on...[Show more]

CollectionsANU Research Publications
Date published: 2009-11-06
Type: Journal article
URI: http://hdl.handle.net/1885/16029
Source: Journal of Applied Physics
DOI: 10.1063/1.3255999

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