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


YURTSEVEN H. H. , Tuzer T. U.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, cilt.71, ss.862-868, 2008 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 71 Konu: 3
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1016/j.saa.2008.02.008
  • Dergi Adı: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
  • Sayfa Sayıları: ss.862-868

Özet

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.