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Frustration is produced in crystals of the KDP family by mixing ferroelectric and antiferroelectric constituents. Birefringence and dielectric measurements are reported for 0 ≤ x ≲ 0.35. They indicate an interesting phas...
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Hydrodynamics of acoustic phonon-molecular reorientation coupling in plastic crystals; vh scatteringA model is developed to describe the coupling between the reorientation of anisotropic molecules and acoustic modes in a plastic crystal. The model is applied to the calculation of depolarized VH light-scattering spectra...