Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9756933 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2005 | 5 Pages |
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 cmâ1) Raman mode of NH4Cl and ν5(177 cmâ1) 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.
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Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
H. Yurtseven,