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Detection and Modelling of Micro-Crystallinity by Means of X-ray Powder Diffractometry

Published online by Cambridge University Press:  06 March 2019

Giovanni Berti
Giovanni Berti*
Affiliation:
Dept. of Earth Sciences–University of Pisa, Italy Via S.Maria 53 -I 56126-Pisa, Italy
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Abstract

Methods for detecting and modeling micro-crystallinity are discussed in view of determining the systematic effects produced on powder diffraction patterns by both sample features and instrumentation. The mathematical theory of x-ray powder diffraction is the appropriate developmental base for defining micro-crystallinity models in terms of structural ohservables, as well as the “mean equivalent lattice” in terms of computational approximations. Such a theory indicates the way to detect micro-crystallinity accurately and precisely within the limits of the approximations.

Measurements have been carried out on a natural magnetite sample and reported here.

Type
V. Residual Stress, Crystallite Size and rms Strain Determination by Diffraction Methods
Information
Advances in X-Ray Analysis , Volume 38: Forty-third Annual Conference on Applications of X-ray Analysis , 1994 , pp. 405 - 412
Copyright
Copyright © International Centre for Diffraction Data 1994

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