The structure of amorphous aluminium phosphate by radial distribution functions derived from X-ray diffraction

1977 ◽  
Vol 12 (5) ◽  
pp. 1039-1049 ◽  
Author(s):  
G. D. Wignall ◽  
R. N. Rothon ◽  
G. W. Longman ◽  
G. R. Woodward
Keyword(s):  
Radial Distribution ◽  
Distribution Functions ◽  
Radial Distribution Functions ◽  
X Ray Diffraction ◽  
Aluminium Phosphate ◽  
X Ray

Structural Study of a Decagonal Al75Fe15Ni10 Alloy by Anomalous X-ray Scattering (AXS) Method

1991 ◽  
Vol 46 (7) ◽  
pp. 605-608 ◽  
Author(s):  
E. Matsubara ◽  
Y. Waseda ◽  
A. P. Tsai ◽  
A. Inoue ◽  
T. Masumoto
Keyword(s):  
Structural Study ◽  
Radial Distribution ◽  
Distribution Functions ◽  
Radial Distribution Functions ◽  
X Ray Diffraction ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

A structural study of an as-quenched decagonal Al75Fe15Ni10 alloy has been carried out by anomalous x-ray scattering (AXS) as well as ordinary x-ray diffraction. The environmental radial distribution functions (RDFs) for Fe and Ni determined by the AXS measurements turned out to resemble each other and to be similar to the ordinary RDF obtained by ordinary x-ray diffraction. These results clearly show that the Ni and Fe atoms are homogeneously distributed and occupy the same sites in the decagonal structure of Al75Fe15Ni10.

Model Calculation for the Fe80B20 Alloy Glass

1982 ◽  
Vol 37 (6) ◽  
pp. 611-612 ◽  
Author(s):  
T. Fujiwara ◽  
H. S. Chen ◽  
Y. Waseda
Keyword(s):  
Neutron Diffraction ◽  
Model Calculation ◽  
Radial Distribution ◽  
Short Distance ◽  
Random Packing ◽  
Distribution Functions ◽  
Radial Distribution Functions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Model Structures

Abstract Three partial radial distribution functions [RDF’s] are calculated by means of relaxed dense-random packing models for a Fe80B20 glass. The model structures reproduce fairly well recently reported experimental partial RDF's derived from x-ray diffraction and neutron diffraction using isotopic substitutional methods. Most significantly, both the model calculated by means of relaxed dense-random packing models GBB (r), the appearance of a subpeak on the short distance side of the first peak.

Exact model calculations of the total radial distribution functions for the X-ray diffraction case and systems of complicated chemical composition

2005 ◽  
Vol 38 (6) ◽  
pp. 1020-1027 ◽  
Author(s):  
V. I. Korsunskiy ◽  
R. B. Neder
Keyword(s):  
Chemical Composition ◽  
Radial Distribution ◽  
Distribution Functions ◽  
Stochastic Simulations ◽  
Radial Distribution Functions ◽  
X Ray Diffraction ◽  
Step Size ◽  
Model Calculations ◽  
X Ray ◽  
Complex Chemical Composition

An algorithm to simulate the radial distribution functions (RDFs) for systems of complex chemical composition is presented which takes into account the exact formulae of the RDF theory in the case of X-ray diffraction. The representation of the partial RDFs of the structural models by histograms allows the method to be used for a wide set of models, for example structures generated with stochastic simulations like the Monte Carlo method. The sensitivity of the results in relation to histogram step size and histogram noise is investigated. A step size of about half the full width at half-maximum (FWHM) of the partial RDF peaks is sufficiently small to make the algorithm reasonably insensitive to the particular step size and to histogram noise. A solution is proposed to calculate the RDF for powders of nanocrystalline particles with complex structures, for which not all interatomic distances can be defined accurately.

Sign in / Sign up

Export Citation Format

Share Document