Molecular crystals and liquid crystals · 1984 · 15 citations · 1 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsPhase TransformationsSolid State PhysicsLiquid CrystalsNeutron DiffractionOptical Properties Of SolidsPhase DiagramsPhase TransitionsSolid-state Phase TransitionsCrystalline Phase FormationDiffraction PatternsNematic Liquid CrystalsPhase Diagram AnalysisPhase Transition PathwaysRaman SpectraSolid-liquid Phase TransitionThermal Analysis Of Phase Transitions
Abstract Combined neutron diffraction and Raman scattering measurements were carried out on a series of different phases of the same MBBA sample. The change in the diffraction patterns and in the optical spectra are used to indicate the transitions between the different phases investigated in the whole temperature range of interest. Besides the isotropic and nematic liquid crystalline phases, 7 different solid structures were found and a schematic phase diagram was constructed to show the thermal procedur for producing these phases.
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