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Rate-dependent phase transformations in nanoindented germanium

Oliver, D. J.; Bradby, J. E.; Williams, J. S.; Swain, M. V.; Munroe, P.


There is considerable controversy over the deformation behavior of germanium(Ge) under nanoindentation using a sharp diamond tip, with a diverse range of observations that suggest competing mechanisms. Here we show the deformation mechanism of Ge can be controlled by the rate of applied load. Loading rate is varied over three orders of magnitude using depth-sensing nanoindentation. At slow loading rates, shear-induced plasticity is observed. At rapid loading rates (>100 mN s¯¹),...[Show more]

CollectionsANU Research Publications
Date published: 2009-06-17
Type: Journal article
Source: Journal of Applied Physics
DOI: 10.1063/1.3151967


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