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EXAFS Studies of Metallothionein
1987Extended x-ray absorption fine structure (EXAFS) has been used to investigate the metal environment in a number of metallothioneins (MT). In all cases, the primary coordination sphere consists of sulphur atoms. In some cases, evidence for cluster formation is obtained.
S S, Hasnain +6 more
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EXAFS: a probe for metalloproteins
Nature, 1990X-ray absorption spectroscopy provides a method for studying the local environment around a metal atom in a protein.
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EXAFS and LocalThermal Expansion
Physica Scripta, 2005The sensitivity of X-ray absorption spectroscopy (XAS)to the local structure around a selected atomic species (symmetry,distances and angles)is commonly exploited to quantitatively describe systems where all the configurations around the absorbing atoms may be approximated by the mean on. However,in many cases of disordered systems a simple description
Fornasini, Paolo +7 more
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The small-atom approximation in EXAFS and surface EXAFS
Journal of Physics C: Solid State Physics, 1988A simplification of the exact curved-wave theory of extended X-ray absorption fine structure (EXAFS) is presented. This simplified theory is obtained from an approximation to the wavefunction which is based on the physics of the scattering process, and it is found to be in good agreement with the exact theory almost down to the absorption edge.
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Advances in Physics, 1984
Abstract The extended X-ray absorption fine structure (EXAFS) technique is now used extensively and effectively in the study of the structure of metal catalysts. This paper is a review of the different types of EXAFS experiments, and of the kind of results they give, and it also speculates on the future of the technique in solid-state physics.
P. Lagarde, H. Dexpert
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Abstract The extended X-ray absorption fine structure (EXAFS) technique is now used extensively and effectively in the study of the structure of metal catalysts. This paper is a review of the different types of EXAFS experiments, and of the kind of results they give, and it also speculates on the future of the technique in solid-state physics.
P. Lagarde, H. Dexpert
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1983
Focused on metallurgy this paper addresses crystalline systems only, since amorphous metallic alloys have been discussed elsewhere [1]. The outline of this short review will be to show typical metallurgical problems where EXAFS has proved its efficiency. Some problems previously reviewed in the Daresbury meeting will not be recalled [2].
E. Dartyge, A. Fontaine, J. Mimault
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Focused on metallurgy this paper addresses crystalline systems only, since amorphous metallic alloys have been discussed elsewhere [1]. The outline of this short review will be to show typical metallurgical problems where EXAFS has proved its efficiency. Some problems previously reviewed in the Daresbury meeting will not be recalled [2].
E. Dartyge, A. Fontaine, J. Mimault
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Le Journal de Physique IV, 1997
The occurrence of a magnetic contribution in the EXAFS regime is a complex problem but interesting phenomenon since it is expected to contain unique information on the magnetic short-range order. Experimental studies of the small effects with sufficient high accuracy are required to provide the possibility of a reliable data analysis and interpretation.
Schûtz, G., Ahlers, D.
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The occurrence of a magnetic contribution in the EXAFS regime is a complex problem but interesting phenomenon since it is expected to contain unique information on the magnetic short-range order. Experimental studies of the small effects with sufficient high accuracy are required to provide the possibility of a reliable data analysis and interpretation.
Schûtz, G., Ahlers, D.
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EXAFS and Surface EXAFS: Principles, Analysis and Applications
1981A discussion is given of principles and analysis methods of the Extended X-ray Absorption Fine Structure (EXAFS) technique with emphasis on applications in surface crystallography. The various detection techniques in use such as transmission, fluorescence, electron yield and ion yield will be discussed and compared with respect to their applicability ...
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EXAFS study of nanocrystalline cobalt
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1995Abstract An EXAFS study of the local environment of nanocrystalline cobalt is presented. In order to determine the pair correlation function (PCF) by solving the integral equation we applied a modified regularization algorithm. For nano-Co we obtain an enhanced reduction of the first coordination number (N = 6.4 atoms).
BABANOV YA +4 more
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EXAFS study of nanocrystalline iron
Physica B: Condensed Matter, 1995Abstract A multiple-scattering EXAFS study of nanocrystalline iron prepared by high-energy ball milling is presented. A dramatic decrease of the coordination numbers, assigned to the presence of a large defect density, is found as a function of the milling time. An “in situ” annealing (up to about 1100°C) is shown to reduce the density of the defects.
DI CICCO, Andrea +3 more
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