Article ID Journal Published Year Pages File Type
9756933 Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2005 5 Pages PDF
Abstract
This study gives our analysis of the Raman bandwidths using the soft mode-hard mode coupling model applied to ammonium halides. The temperature dependence of our observed bandwidths for the ν5(174 cm−1) Raman mode of NH4Cl and ν5(177 cm−1) Raman mode of NH4Br, is analyzed close to phase transitions. From our analysis, we obtain β = 0.13 as the values of the critical exponent for the order parameter in the first order phase region for the ammonium halides.
Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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