Results 241 to 250 of about 11,531 (285)
Some of the next articles are maybe not open access.
Physica B: Condensed Matter, 1995
Abstract We present an X-ray absorption study of zinc selenide at the Zn and Se K-edges. The analysis of the X-ray absorption fine structure (XAFS) was done in the framework of the multiple-scattering theory. The total XAFS signals have been obtained; they are in good agreement with the experimental data.
D. Diop, R. Grisenti
openaire +1 more source
Abstract We present an X-ray absorption study of zinc selenide at the Zn and Se K-edges. The analysis of the X-ray absorption fine structure (XAFS) was done in the framework of the multiple-scattering theory. The total XAFS signals have been obtained; they are in good agreement with the experimental data.
D. Diop, R. Grisenti
openaire +1 more source
Reviews in Mineralogy and Geochemistry, 2014
The basic physical principles of X-ray Absorption Fine-Structure (XAFS) are presented. XAFS is an element-specific spectroscopy in which measurements are made by tuning the X-ray energy at and above a selected core-level binding energy of a specified element.
openaire +1 more source
The basic physical principles of X-ray Absorption Fine-Structure (XAFS) are presented. XAFS is an element-specific spectroscopy in which measurements are made by tuning the X-ray energy at and above a selected core-level binding energy of a specified element.
openaire +1 more source
XAFS in dilute magnetic semiconductors
Dalton Transactions, 2013X-Ray absorption fine structure (XAFS) spectroscopy has experienced a rapid development in the last four decades and has proved to be a powerful structure characterization technique in the study of local environments in condensed matter. In this article, we first introduce the XAFS basic principles including theory, data analysis and experiment in some
Zhihu, Sun +5 more
openaire +2 more sources
Physica B: Condensed Matter, 1989
Abstract The transferability concept is central to all practical applications of XAFS for structure determination, both experimental and theoretical. In this paper the question of transferability in EXAFS is re-examines. Physical arguments ndicate that transferability is much less accurate for multiple scattering than for single scattering. Therefore
openaire +1 more source
Abstract The transferability concept is central to all practical applications of XAFS for structure determination, both experimental and theoretical. In this paper the question of transferability in EXAFS is re-examines. Physical arguments ndicate that transferability is much less accurate for multiple scattering than for single scattering. Therefore
openaire +1 more source
Japanese Journal of Applied Physics, 1993
The ultimate information content of XAFS is discussed. The practical limits for obtaining this information are indicated. The most general case is considered where nothing is known about the structure and there is no orientation dependence of the XAFS with respect to the sample.
openaire +1 more source
The ultimate information content of XAFS is discussed. The practical limits for obtaining this information are indicated. The most general case is considered where nothing is known about the structure and there is no orientation dependence of the XAFS with respect to the sample.
openaire +1 more source
Physica B: Condensed Matter, 1995
Abstract X-ray-absorption near edge structure (XANES) poses many theoretical challenges and a general quantitative theory remains elusive. We have studied structural contributions to XANES based on high-order multiple-scattering (MS) calculations, including X-ray polarization. Ab initio MS calculations of XANES are presented using a code FEFF6X, that
J.J. Rehr +3 more
openaire +1 more source
Abstract X-ray-absorption near edge structure (XANES) poses many theoretical challenges and a general quantitative theory remains elusive. We have studied structural contributions to XANES based on high-order multiple-scattering (MS) calculations, including X-ray polarization. Ab initio MS calculations of XANES are presented using a code FEFF6X, that
J.J. Rehr +3 more
openaire +1 more source
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1992
Abstract X-ray absorption fine structure (XAFS) spectroscopy is element specific, enabling individual pair distribution functions to be extracted for complex materials. Theoretical advances in multiple scattering have lead to a complete description of both near edge structure and extended fine structure (EXAFS). As a result, the radii and occupancies
B.R. Dobson, G.N. Greaves
openaire +1 more source
Abstract X-ray absorption fine structure (XAFS) spectroscopy is element specific, enabling individual pair distribution functions to be extracted for complex materials. Theoretical advances in multiple scattering have lead to a complete description of both near edge structure and extended fine structure (EXAFS). As a result, the radii and occupancies
B.R. Dobson, G.N. Greaves
openaire +1 more source
XAFS for Characterization of Nanomaterials
2016X-ray absorption fine structure (XAFS) spectroscopy studies the modification of the X-ray absorption coefficient, above the absorption edge of a specific element, due to the presence of neighboring atoms and delivers information on materials nano- and electronic structure.
Maria Katsikini, Eleni C. Paloura
openaire +1 more source
2010
X-ray absorption fine structure spectroscopy (XAFS) is a powerful and versatile technique for studying structures of materials in chemistry, physics, biology and other fields. This textbook is a comprehensive, practical guide to carrying out and interpreting XAFS experiments.
openaire +1 more source
X-ray absorption fine structure spectroscopy (XAFS) is a powerful and versatile technique for studying structures of materials in chemistry, physics, biology and other fields. This textbook is a comprehensive, practical guide to carrying out and interpreting XAFS experiments.
openaire +1 more source