Magnesium oxide nanocubes are compressed along the  direction in situ in the transmission electron microscope. Incipient plasticity in the smaller samples is characterized by the nucleation of few (Formula presented.) dislocations while a larger number of line defects is observed in larger nanocubes. Yield and flow stresses scattered stochastically above a minimum value varying as the inverse of the sample size. The upper bound is given by the reduced number of dislocation sources. Such size-dependent behaviour is justified by a detailed statistical analysis and is fully explained by the deformation mechanism.
|Number of pages||6|
|Journal||Materials Research Letters|
|Publication status||Published - 2021|
- In situ
ASJC Scopus subject areas
- Materials Science(all)