Origin of Raman Scattering and Ferroelectricity in Oxidic Perovskites
- 25 October 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 37 (17), 1155-1158
- https://doi.org/10.1103/physrevlett.37.1155
Abstract
The second-order Raman scattering and the temperature dependence of the ferroelectric soft mode in perovskites are explained quantitatively in terms of a nonlinear shell model by assuming an anisotropy in the oxygen polarizability. This model yields a new explanation for the origin of ferroelectricity in perovskites.
Keywords
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