HIGH-TEMPERATURE PHASE OF FERROELECTRIC DABCO PERRHENATE
In this project we propose to collect the lacking single-crystal neutron diffraction data of dabcoHReO4 in the high-temperature phase II at 380 K. At room temperature this ferroelectric crystal is built of H-bonded polarized linear polycationic chains arranged parallel, which substantially contribute to the total polarization of the crystal. The structure determination with neutrons is essential for a better insight into the protons behavior in Nƒ{H¡P¡P¡PN hydrogen bonds and possible crystal disorder in phase II. Moreover, this experiment should be helpful in determination of the true crystal symmetry and resolving the long-standing debate on this issue.
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SZAFRANSKI Marek; FABELO ROSA Oscar Ramon and KATRUSIAK Andrzej. (2020). HIGH-TEMPERATURE PHASE OF FERROELECTRIC DABCO PERRHENATE. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.DIR-191
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