Results 171 to 180 of about 484 (218)
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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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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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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 studies on copper transferrin
Journal of Inorganic Biochemistry, 1992Abstract EXAFS spectra of the dicopper and monocopper complexes of human serum transferrin have been recorded and compared to those of the native iron derivative. The experimental data have been analyzed by comparison with EXAFS data obtained from copper(II) model compounds.
Mangani, Stefano, Messori, Luigi
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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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Journal of Physics: Condensed Matter, 2001
Extended x-ray absorption fine structure (EXAFS) spectroscopy exploits the quantum interference resulting from the scattering of a photoelectron, generated by the excitation of a core level, by the potential of the surrounding atoms. From the interference pattern it is possible to determine the distance and average distribution of the nearest ...
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Extended x-ray absorption fine structure (EXAFS) spectroscopy exploits the quantum interference resulting from the scattering of a photoelectron, generated by the excitation of a core level, by the potential of the surrounding atoms. From the interference pattern it is possible to determine the distance and average distribution of the nearest ...
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Dispersive EXAFS apparatus at Frascati
Review of Scientific Instruments, 1992We report the successful design and test of a dispersive extended x-ray absorption fine structure (EXAFS) apparatus at Frascati. This technique is capable of measuring x-ray absorption spectra in fractions of a second and makes time-resolved structural studies possible.
F d'Acapito +3 more
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Zeitschrift f�r Physik B Condensed Matter, 1985
We discuss advantages and limitations of X-ray absorption fine structure (EXAFS), X-ray diffraction and anomalous X-ray diffraction as structural tools for ordered and (chemically and structurally) disordered solids.
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We discuss advantages and limitations of X-ray absorption fine structure (EXAFS), X-ray diffraction and anomalous X-ray diffraction as structural tools for ordered and (chemically and structurally) disordered solids.
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