Numéro
J. Phys. I France
Volume 1, Numéro 4, April 1991
Page(s) 523 - 535
DOI https://doi.org/10.1051/jp1:1991108
DOI: 10.1051/jp1:1991108
J. Phys. I France 1 (1991) 523-535

Microcrystals and quasicrystals : how to construct microcrystals with mean perfect quasicrystalline symmetry

G. Coddens

Laboratoire Léon Brillouin, Commun CEA-CNRS, F-91191-Gif-sur-Yvette Cedex, France Neutron Scattering Project IIKW, University of Antwerp, B-2610-Wilrijk, Belgium


(Received 15 May 1990, revised 12 December 1990, accepted 13 December 1990)

Abstract
It is shown how the construction of "interwinning" elucidates the relationship between quasicrystals and microcrystals in phase transitions as observed in recent experiments. Both the diffraction patterns and the domain geometry are studied simultaneously. The splitting of the diffraction peaks in the phase transition can be calculated. Several scenarios are possible.

Résumé
On démontre comment la construction d'"intermaclage" clarifie la relation entre les quasicristaux et les microcristaux dans les transitions de phase comme celles observées récemment dans les expériences. Les diagrammes de diffraction et la géométrie des domaines sont considérés simultanément et l'éclatement des pics de diffraction dans les transitions de phase peut être calculé. Plusieurs scénarios sont possibles.



© Les Editions de Physique 1991

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