Soft Optic Modes in Barium Titanate
- 31 July 1967
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 19 (5), 234-235
- https://doi.org/10.1103/PhysRevLett.19.234
Abstract
Phonon dispersion relations of BaTi have been measured in the cubic phase by the inelastic neutron scattering technique. The energy of the soft mode, consistent with Cochran's theory, decreases with temperature to 0.8 meV at 230°C.
Keywords
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