Journal
NANOTECHNOLOGY
Volume 20, Issue 13, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/20/13/135603
Keywords
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Funding
- Australian Research Council
- Canadian Natural Sciences and Engineering Research Council.
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The nanoindentation-induced phase transformation behavior of silicon at elevated temperatures (25-150 degrees C) has been studied. Nucleation of Si-III/Si-XII on unloading is enhanced with increasing temperature and at the highest temperatures in an amorphous Si matrix, occurs in a continuous fashion without a pop-out event. Interestingly, for slow unloading at the highest temperatures, formation of Si-III/Si-XII in a crystalline Si matrix was not observed. Elevated temperatures enhance the nucleation of Si-III and Si-XII during unloading but the final composition of the phase transformed zone is also dependent on the thermal stability of the phases in their respective matrices.
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