Electron-radiation-enhanced glide of 30°-Si(g) partial dislocations bringing about an expansion/shrinkage of Shockley-type stacking faults in 4H-SiC was observed in-situ by transmission electron microscopy. Geometrical kinks on 30°-Si(g) partials did not migrate in the dark, indicating that the kink migration is enhanced by electron irradiation. The direction of the enhanced glide was reversible depending on the irradiation intensity, which can be interpreted in terms of a sign reversal of the driving force originating in the effective stacking fault energy variable with the irradiation intensity.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)