Phase transformation pathways in amorphous germanium under indentation pressure
Nanoindentation-induced phase transformations have been studied in amorphous Ge thin films. These films initially tend to deform via plastic flow of the amorphous phase under load but at a critical pressure a sudden phase transformation occurs. This transformation, to a soft metallic (β-Sn-like)-Ge phase confined under the indenter, is signified by a "pop-in" event on loading. Following "pop-in," the indentation tests fall into two distinct types of behavior. In one case, the rate of...[Show more]
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|Source:||Journal of Applied Physics|
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