A Raman spectroscopic study of the structural phase transition and reorientational motions of the ClO ions in KClO4
- 1 June 1983
- journal article
- research article
- Published by Wiley in Journal of Raman Spectroscopy
- Vol. 14 (3) , 166-177
- https://doi.org/10.1002/jrs.1250140308
Abstract
Polarized Raman spectra of oriented single crystals of KClO4 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.Keywords
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