Photoemission studies of I-II, I-III intermetallic compounds with B32 (Zintl) structure. Part 1: LiAl
Abstract
The I-II, I-III intermetallic compounds with B32 (Zintl) structure have recently attracted considerable interest because one of the members of this family (LiAl) is a promising candidate for an electrode material in high energy density (lithium-sulfur) batteries. In addition, these materials are useful as solid blankets for nuclear reactors. The experimental and theoretical data obtained so far for these materials raise a number of problems that warrant a thorough consideration, among which: (1) the conductivity behavior (metallic in I-II compounds and p-type in I-III compounds); (2) the finite vacancy concentration in I-III compounds even at low temperatures; and (3) the discrepancies between the results of different band structure calculations, and their poor agreement with the reported experimental data. A systematic experimental study of the electronic structure of the occupied and empty states of representative compounds in the I-II and I-III series was recently begun by using the complementary information provided by a number of electron and X-ray spectroscopies, including XPS, EELS, AES, APS, and synchrotron radiation photoelectron and yield spectroscopies. Results follow.
- Publication:
-
Activity of the National Synchrotron Light Source (NSLS)
- Pub Date:
- 1984
- Bibcode:
- 1984nsls.rept..171C
- Keywords:
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- Aluminum;
- Atomic Structure;
- Intermetallics;
- Lithium Alloys;
- Photoelectric Emission;
- Synchrotron Radiation;
- Blankets (Fission Reactors);
- Electrical Resistivity;
- Lithium Sulfur Batteries;
- Nuclear and High-Energy Physics