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Journal articles
High spatial resolution studies of phase transitions within organic aperiodic crystals
Abstract : The understanding of the symmetry breakings within crystals that are aperiodic by construction is actually very limited. Quasicrystals and incommensurate composite crystals may potentially allow such studies. We focus on the phase transitions of the aperiodic n-nonadecane/urea which recovers a translational symmetry within a four-dimensional space at room temperature. High-resolution neutron and synchrotron studies are reported as a function of the temperature on this organic crystal which presents an exceptional mosaicity. They reveal the richness of such approach, showing the appearance of very long wavelength supplementary intermodulations. This work generalizes the Landau theory to incommensurate composite crystals.
Cited literature [50 references]
https://hal-univ-rennes1.archives-ouvertes.fr/hal-02634594
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Friday, May 29, 2020 - 12:09:08 PM
Last modification on : Thursday, July 1, 2021 - 11:04:00 AM
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Friday, May 29, 2020 - 12:09:08 PM
Last modification on : Thursday, July 1, 2021 - 11:04:00 AM