Journal of Raman Spectroscopy · 1983 · 31 citations · 9 references
Clo IonsSingle CrystalsEngineeringSolid-state ChemistryChemistrySpectroscopic PropertySpectra-structure CorrelationRaman StudyMaterials SciencePhysicsCrystal MaterialStructural Phase TransitionPhysical ChemistryKclo 4CrystallographyPhysicochemical AnalysisNatural SciencesApplied PhysicsRaman Spectroscopic StudyIon Structure
Abstract Polarized Raman spectra of oriented single crystals of KClO 4 performed over a large temperature range (300–800 K) have been used to investigate the mechanism of the 583 K phase transition. It is shown that the transition can be described using an order parameter and a mechanism based on the reorientation of the ClO ions is proposed. A Raman study of the plastic phase (above 583 K), using the shape of the bands associated with the internal modes, leads to a measure of the orientational density probability and the orientational self‐correlation functions of the perchlorate ions.
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