The effects of temperature and electron energy on the electron-irradiation- induced decomposition of sapphire have been investigated by in situ transmission electron microscopy (TEM). It was found that the decomposition rate of α-Al2O3 increased with increasing irradiation temperature and decreased with increasing acceleration voltage. The core-hole Auger decay process (K-F model), rather than knock-on displacement, is responsible for the decomposition of α-Al2O3 under electron irradiation.
- electron irradiation
- phase transformations
- transmission electron microscopy
ASJC Scopus subject areas
- Condensed Matter Physics