Analysis of the Raman intensities near the phase transitions in ammonium halides

YURTSEVEN, HASAN; Tuzer, T.

doi:10.1016/j.saa.2008.02.008

Analysis of the Raman intensities near the phase transitions in ammonium halides

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YURTSEVEN H. H., Tuzer T. U.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, vol.71, no.3, pp.862-868, 2008 (SCI-Expanded)

Publication Type: Article / Article
Volume: 71 Issue: 3
Publication Date: 2008
Doi Number: 10.1016/j.saa.2008.02.008
Journal Name: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Page Numbers: pp.862-868
Middle East Technical University Affiliated: Yes

Abstract

This study concentrates on the temperature dependence of the Raman intensities for the lattice modes in ammonium halides (NH4Cl and NH4Br) close to phase transitions, We predict their intensities using the results of a shell model for the Raman polarizability within the framework of an Ising pseudospin-phonon coupled model.