Premium
XPS and XES Study of the Valence Band of Cr ‐Al B.C.C. Solid Solutions
Author(s) -
ŁawniczakJabłońska K.,
Minni E.,
Pełka J.,
Suoninen E.,
Auleytner J.
Publication year - 1984
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.2221230227
Subject(s) - antiferromagnetism , x ray photoelectron spectroscopy , valence band , valence (chemistry) , spectral line , electronic structure , materials science , electronic band structure , semimetal , condensed matter physics , solid solution , electrical resistivity and conductivity , crystallography , chemistry , nuclear magnetic resonance , band gap , physics , metallurgy , organic chemistry , quantum mechanics , astronomy
The XPS and Cr L α ES valence band spectra of b.c.c. Cr ‐Al alloys in the region 0 to 25 at% Al are presented. The shape and halfwidth of these spectra change notably at approximately 15 at% Al. The results are discussed on the basis of various simple models for the electronic structure of the alloys. The observed changes in the valence band are consistent with the results of magnetic and resistivity measurements. However, the present understanding of the changes in the electronic structure of the Cr ‐Al alloys is not complete. The effect of the recently discovered inhomogeneity of the microstructure of these alloys in the upper part of the concentration region upon the electronic structure is, together with the antiferromagnetic order, the probable reason for the observed complicated behaviour of the valence band spectra with composition.