Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 980, Issue 1-3, Pages 214-217Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molstruc.2010.07.016
Keywords
Phonons; Lattice dynamics; Raman spectra; Infrared spectra
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Funding
- Council of Scientific and Industrial Research, New Delhi
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A short range force constant model has been applied using normal coordinates for the first time in Sr(2)LnTaO(6) (Ln = Nd, Gd, Dy, Er, Yb) having space group P2(1)/n. The zone center phonons have been calculated with nine stretching and 11 bending force constants. The calculated values of the Raman and the infrared wavenumbers are in good agreement with the observed ones. The potential energy distribution has also been investigated for determining the significance of contribution from each force constant towards the Raman and the infrared wavenumbers. (C) 2010 Elsevier B.V. All rights reserved.
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