Study of zone center phonons in wolframite ZnWO_4

Authors

RUBY JINDAL
MURARI MOHAN SINHA
HEM CHANDRA GUPTA

DOI

10.3906/fiz-1205-7

Abstract

A short-range force constant model was applied to investigate the phonons in wolframite ZnWO_4 crystals in their monoclinic phase having space group P2/c and symmetry C_{2h}. The normal symmetry coordinates for the monoclinic wolframite were computed. The zone center phonons were calculated by using 8 stretching and 6 bending force constants. The calculated results are in very good agreement with the observed ones. The infrared frequencies were assigned for the first time. The potential energy distribution was also investigated for determining the significance of the contribution from each force constant toward the Raman and infrared wavenumbers.

Keywords

Lattice dynamics, infrared spectra, Raman spectra, zone center phonons, wolframite structure

First Page

107

Last Page

112

Recommended Citation

JINDAL, RUBY; SINHA, MURARI MOHAN; and GUPTA, HEM CHANDRA (2013) "Study of zone center phonons in wolframite ZnWO_4," Turkish Journal of Physics: Vol. 37: No. 1, Article 11. https://doi.org/10.3906/fiz-1205-7
Available at: https://journals.tubitak.gov.tr/physics/vol37/iss1/11