화학공학소재연구정보센터
Journal of Vacuum Science & Technology A, Vol.12, No.3, 802-806, 1994
Core-Valence Auger-Spectra of Lial Zintl Intermetallic Compound
The core-valence-valence Auger spectra were measured for a nearly stoichiometric polycrystalline LiAl intermetallic compound. These spectra were compared with the self-convolution of die density-of-state curves obtained from theoretical band structure calculations. Major discrepancies between the experimental data and this simple one-particle model prompt a more elaborate treatment to include many-body and core-hold relaxation effects. Significant accumulation of lithium was observed at the surface of the "as-fractured" sample. Ion bombardment resulted in lithium removal from the damaged surface layer, as opposed to electron bombardment which caused surface segregation of lithium originating from the bulk.