Vibrations and force constants of the hexagonal lithium iodate crystal
- 1 May 1979
- journal article
- conference paper
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 70 (9) , 4194-4198
- https://doi.org/10.1063/1.438043
Abstract
Force constants of the α‐LiIO3 crystal are calculated based on the thirteen k=0 infrared and Raman active vibrations. Setting up a generalized valence force field for the IO3 group and both valence and central forces for the external interactions has allowed us to obtain good agreement between experimental and calculated frequencies. The introduction of translational and librational coordinates related to the normal coordinate analysis leads to a precise assignment of the frequencies and shows that the degenerate bending vibrations of the IO3 groups are strongly coupled with the translational vibrations of the lithium atoms.Keywords
This publication has 10 references indexed in Scilit:
- Raman study of the α-γ phase transition of lithium iodateSolid State Communications, 1976
- Oblique Polaritons in Uniaxial Crystals: Application to LiIPhysical Review B, 1972
- Thermoanalytical study of the polymorphism in LiIO3Materials Research Bulletin, 1972
- Phonons, Polaritons, and Oblique Phonons in LiIby Raman Scattering and Infrared ReflectionPhysical Review B, 1971
- Polymorphism of lithium iodateMaterials Research Bulletin, 1971
- Optical Properties of LiIO3 in the Far InfraredJournal of Applied Physics, 1970
- Optical Nonlinearities in LiIO3Journal of Applied Physics, 1969
- On the Phonon and Polariton Spectrum of LiJO3Zeitschrift für Naturforschung A, 1969
- Re-investigation of the crystal structure of lithium iodateActa Crystallographica, 1966
- A reinvestigation of the crystal structure of LiIO3Acta Crystallographica, 1966