Voigt modelling of size-strain analysis: Application to α-Al2O3 prepared by combustion technique

A comprehensive analysis of size and strain broadened profile shapes in X-ray diffraction line broadening analysis is presented. Both size and strain broadened profiles were assumed to be Voigtian and the derived microstructural parameters (size and strain) were found to be in close agreement with t...

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Bibliographic Details
Published inBulletin of materials science Vol. 25; no. 3; pp. 251 - 257
Main Authors Santra, K., Chatterjee, P., Sen Gupta, S. P.
Format Journal Article
LanguageEnglish
Published Bangalore Springer Nature B.V 01.06.2002
Subjects
Aluminum nitrate
Aluminum oxide
Combustion
Line broadening
Size distribution
Strain analysis
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Summary:A comprehensive analysis of size and strain broadened profile shapes in X-ray diffraction line broadening analysis is presented. Both size and strain broadened profiles were assumed to be Voigtian and the derived microstructural parameters (size and strain) were found to be in close agreement with those calculated from model independent Warren-Averbach method. The method is applied to three different alumina samples viz. micron size α-alumina (α-Al2O3) prepared by the combustion of aluminium nitrate and urea mixture, annealed samples and commercial α-Al2O3 sample. It is likely from the present analysis that a significant Gaussian size contribution is related to narrow size distribution observed from the analysis. It has been concluded that present Voigtian analysis is more reliable and may largely replace the earlier simplified integral breadth methods of analysis often used in line broadening analysis.
ISSN:0250-4707
0973-7669
DOI:10.1007/BF02711163