Quantitative phase analysis by X-ray diffraction-simple routes

Scientific paper - Original scientific paper

• Author: Stanko Popović
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

The elemental composition of a multiphase material can be obtained by means of chemical and spectroscopic techniques. However, these techniques face a great difficulty in distinguishing the chemical identity of the phases present in the material and in derivation of the fractions of particular phases. X-ray powder diffraction seems to be an ideal technique for the analysis of a multiphase material. Each crystalline phase of the material gives its characteristic diffraction pattern independently of the other phases; this fact makes it possible to identify the phase of interest and to determine its fraction. The intensities of diffraction lines of a given phase are proportional to its fraction and an appropriate quantitative analysis can be performed after the application of the correction for the absorption of X-rays in the material. The principles of quantitative X-ray diffraction phase analysis of a multiphase material are presented, with a special attention paid to the doping methods. The following methods are described: (i) determination of the fraction of a phase using repeated dopings, (ii) determination of the fraction of a phase using a single doping, (iii) simultaneous determination of the fractions of several phases using a single doping; (iv) determination of the fraction of the dominant phase. The applicability of the doping methods is stated and the optimum conditions to minimize systematic errors are discussed. Recent approaches in quantitative X-ray diffraction phase analysis are also mentioned in short.

• Keywords (english): X-ray powder diffraction; quantitative phase analysis; doping methods
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Macedonian Journal of Chemistry and Chemical Engineering
• Numbering: vol. 34, no. 1, pp. 33-38
• p-ISSN: 1857-5552
• e-ISSN: 1857-5625
• DOI: https://doi.org/10.20450/mjcce.2015.643
• URN:NBN: urn:nbn:hr:217:502268
• Publication: 2015
• Project: Number: 119-0982886-1009; Title (croatian): Struktura i svojstva posebnih nanomaterijala dobivenih suvremenim tehnikama; Leader: Antun Tonejc; Jurisdiction: Croatia; Funding stream: ZP
• Document URL: https://mjcce.org.mk/index.php/MJCCE/article/view/mjcce.2015.643
• Type of resource: Text
• Access conditions: Open access
• Public note: Copyright (c) 2016 Stanko Popović. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
• Created on: 2020-01-11 14:57:19