Abstract
It is shown that Raman scattering from polycrystalline piezoelectric solids contains all of the essential features of Raman single-crystal spectra even when the crystal spectrum is quite anisotropic. As an illustration of the Raman powder technique, the ceramic ferroelectric-antiferroelectric system PbTi-PbZr has been investigated and the "soft" optical phonon modes measured in the tetragonal ferroelectric region.
- Received 24 August 1970
DOI:https://doi.org/10.1103/PhysRevLett.25.1191
©1970 American Physical Society