The optical properties of lithium-manganese alloys
- 1 March 1973
- journal article
- Published by IOP Publishing in Journal of Physics F: Metal Physics
- Vol. 3 (3) , 623-639
- https://doi.org/10.1088/0305-4608/3/3/021
Abstract
A series of LiMg alloys has been studied by ultra high vacuum ellipsometry. The b.c.c. alloys containing more than 30% Mg show pronounced parallel band absorption and values of the energy gap at the (110) zone boundary are accurately derived. The optical properties of these concentrated disordered alloys show convincingly that the concepts of Fermi surface and zone structure maintain their significance in such disordered systems. The optical and soft X-ray data for Li are used to obtain a qualitative description of the band structure of this metal. The virtual crystal model is applied to the alloy data and found to give a rather poor description of the observed behaviour.Keywords
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