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Fundamental Developments in Direct-Space Techniques for Structure Solution from Powder Diffraction Data

Journal Materials Science Forum (Volumes 443 - 444)
Volume European Powder Diffraction EPDIC 8
Edited by Yvonne Andersson, Eric J. Mittemeijer and Udo Welzel
Pages 11-22
DOI 10.4028/www.scientific.net/MSF.443-444.11
Citation Scott Habershon et al., 2004, Materials Science Forum, 443-444, 11
Online since January, 2004
Authors Scott Habershon, David Albesa-Jové, Eugene Y. Cheung, Giles W. Turner, Roy L. Johnston, Kenneth D.M. Harris
Keywords Energy, Genetic Algorithm (GA), Powder Diffraction, Structure Solution
Abstract

Solids that can be prepared only as microcrystalline powders are not suitable for structural investigation using single crystal diffraction techniques, and it is necessary instead to carry out structure determination using powder diffraction data. In this paper, we focus on a direct-space strategy for solving crystal structures directly from powder diffraction data in which a hypersurface based on the powder profile R-factor Rwp is searched using a Genetic Algorithm, and we highlight some recent fundamental developments relating to this methodology.

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