Open AccessLocal atomic and electronic structure of Al 90 Fe x Ce 10‐ x alloys: XAFS analysis
Author(s) -
Mansour A. N.,
Cibin G.,
Marcelli A.,
Sevastyanova T.,
Yalovega G.,
Soldatov A. V.
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049500016770
Subject(s) - x ray absorption fine structure , electronic structure , crystallography , materials science , atomic physics , x ray crystallography , chemistry , physics , spectroscopy , diffraction , computational chemistry , optics , quantum mechanics
X‐ray absorption fine structure (XAFS) above the Fe K‐edge and the Ce L3‐edge in amorphous Al 90 Fe x Ce 10‐x (x = 3, 5, and 7) alloys have been measured and analyzed. Quantitative analyses of the Fe K‐edge and Ce L 3 ‐edge EXAFS spectra are limited to local structure parameters of the first coordination sphere. Using a theoretical multiple scattering (MS) approach, we show that the Fe and Ce XANES are sensitive to the structure of coordination spheres, which extend up to nearly 4.5 Å. Comparison of experimental XANES spectra with theoretical MS results allows one to determine the local structure around the iron and cerium sites up to at least the third shell of atoms.