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Electronic Energy Bands of Some AgMg, CuAl, and AlLi Alloys
Author(s) -
Raychaudhuri M.,
Chatterjee S.
Publication year - 1982
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221120111
Subject(s) - fermi level , materials science , electronic band structure , band gap , charge (physics) , alloy , condensed matter physics , optoelectronics , physics , metallurgy , quantum mechanics , electron
The complex energy band structures of the substitutional alloys AgMg, CuAl, and AlLi are presented for 13 and 27 at% of Mg in AgMg, 5 and 15 at% of Al in CuAl, and 5 at% of Li for AlLi. The averaged T ‐matrix approximation in conjunction with the KKRZ method is applied to the calculation of the complex energy bands and the Fermi surfaces of the alloys are evaluated from these data. The experimental optical spectra are discussed in the light of band to band transitions of the theoretically found band structures. The effect of charge transfer is also studied for a AgMg alloy with 27 at% Mg. The theoretically obtained Fermi surfaces are compared favourably with the experiment.