Lattice dynamics and Raman spectra of SrTiO3
- 1 January 1976
- journal article
- research article
- Published by Taylor & Francis in Ferroelectrics
- Vol. 13 (1) , 377-379
- https://doi.org/10.1080/00150197608236617
Abstract
The three independent components of the second order Raman spectra of SrTiO3 have been measured at 300 K. They show a strong similarity to the second order spectra of SrO. Very recently, the lattice dynamics1 and the Raman spectra of SrO have been successfully explained on the basis of a nonlinear shell model. It is shown that a modified version of this model theory can be applied to the case of SrTiO3. The importance of the polarizability of the oxygen ion, in particular its intra-ionic anisotropy, for the phonon dispersion curves as well as for the Raman spectra is established. Our results are critically compared with those obtained by other authors.2–4Keywords
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