Analysis of peak shapes in X-ray diffractometry (GUINIER geometry) of standard materials using asymmetric profile functions

authored by
A. M. Schneider, W. Paszkowicz, P. Behrens, J. Felsche
Abstract

X-ray diffraction peaks of α-AI2O3 (NIST-Standard No 679) and Si obtained in the asymmetric transmission mode of the GUINIER geometry are fitted with asymmetrized functions. Best fits are obtained with an asymmetrized pseudo-VOIGT function. The fitted parameters (FWHM and asymmetry) for each component (gaussian and lorentzian) and their mixing coefficient show systematic trends against the diffraction angle 2θ. The applied function is found to be well suited for fitting strongly asymmetric peaks measured on a GUINIER diffractometer.

External Organisation(s)
University of Konstanz
Ludwig-Maximilians-Universität München (LMU)
Instytut Chemii Bioorganicznej Polskiej Akademii Nauk
Type
Article
Journal
Materials Science Forum
Volume
228-231
Pages
89-94
No. of pages
6
ISSN
0255-5476
Publication date
12.1996
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
General Materials Science, Condensed Matter Physics, Mechanics of Materials, Mechanical Engineering