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X‐Ray Spectra and Energy Band Structure of Some Noble and Transition Metal Aluminides
Author(s) -
Nemov S. A.,
Zyryanov V. G.,
Minin V. I.,
Sorokina M. F.
Publication year - 1971
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.2220430133
Subject(s) - aluminium , transition metal , wavelength , atom (system on chip) , spectral line , noble metal , copper , atomic physics , metal , materials science , palladium , absorption (acoustics) , absorption spectroscopy , molecular physics , chemistry , optics , physics , metallurgy , biochemistry , optoelectronics , astronomy , computer science , composite material , embedded system , catalysis
The Al L 2,3 and K β emission bands of noble and several transition metal aluminides have been investigated. In the spectra of the alloys long‐wavelength intensity peaks are observed which are not present in the spectrum of pure aluminium. The appearance of these peaks is associated with the energy bands originating from the d‐states of the noble and transition metal atoms. For the Al bands in CuAl 2 , Cu 2 Al, and PdAl 3 the position of the long‐wave‐length peaks relative to short‐wavelength edges is found to correspond approximately to the position of the copper and palladium L 2,3 ‐band peaks with respect to the absorption edges. It is assumed that the energy region of the d‐like bands in the vicinity of aluminium atoms contains an appreciable amount of states arising from the s and p aluminium atom states. This is suggested to be the reason for the long‐wavelength intensity peaks to appear in the Al L 2,3 ‐and K β ‐bands of the alloys.