Local atomic and electronic structure of Al90FexCe10-x alloys: XAFS analysis

A N Mansour; G Cibin; A Marcelli; T Sevastyanova; G Yalovega; A V Soldatov

doi:10.1107/s0909049500016770

Local atomic and electronic structure of Al90FexCe10-x alloys: XAFS analysis

J Synchrotron Radiat. 2001 Mar 1;8(Pt 2):809-11. doi: 10.1107/s0909049500016770.

Authors

A N Mansour¹, G Cibin, A Marcelli, T Sevastyanova, G Yalovega, A V Soldatov

Affiliation

¹ Naval Surface Warfare Center, Carderock Division, West Bethesda, MD 20817-5700, USA. MansourAN@nswccd.navy.mil

PMID: 11512939
DOI: 10.1107/s0909049500016770

Abstract

X-ray absorption fine structure (XAFS) above the Fe K-edge and the Ce L3-edge in amorphous Al90Fe(x)Ce10-x (x = 3, 5, and 7) alloys have been measured and analyzed. Quantitative analyses of the Fe K-edge and Ce L3-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 A. 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.