Method of Evolutionary Structure-Sensitive Quantitative X-Ray Phase Analysis of Multiphase Polycrystalline Materials


Тип публикации: статья из журнала

Год издания: 2012

Ключевые слова: quantitative X-ray analysis, evolutionary optimization, genetic algorithms, the method of Rietveld full-profile diffraction analysis, Evolutionary optimization, Genetic algorithms, Quantitative X-ray analysis, The method of Rietveld full-profile diffraction analysis, Diffraction analysis, Evolutionary optimizations, Multiobjective evolutionary optimization, Quantitative x-ray analysis, R factor, Round Robin, Structural parameter, Structure-sensitive, Test mixtures, X-ray phase analysis, Factor analysis, Multiobjective optimization, Polycrystalline materials, Probabilistic logics, Rietveld method, X rays

Аннотация: A method of quantitative X-ray phase analysis (QXPA) based on multiobjective evolutionary optimization for automatization and increase in accuracy of QXPA that is based on full-profile analysis by the Rietveld method is proposed. The two-level genetic algorithm performs the probabilistic evolution of profile and structural parameteПоказать полностьюrs by the criterion of minimization of the profile R factor and controls their refinement by the method of full-profile difference-differential analysis (a version of the Rietveld method). The method of evolutional QXPA is discussed by an example of a test mixture of minerals that was used in Round Robin on QPA CPD IUCr.

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Выпуск журнала: Vol. 48, Is. 14

Номера страниц: 1285-1290

ISSN журнала: 00201685

Место издания: NEW YORK



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