Ferroelectric "Soft" Mode in KTa
- 10 February 1967
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 154 (2), 456-458
- https://doi.org/10.1103/physrev.154.456
Abstract
The far infrared reflectivity of KTa has been studied as a function of temperature from 12 to 463°K. The results have been analyzed by means of a Kramers-Kronig method, and indicate a "soft" mode, lowering its frequency as the temperature is lowered towards the "Curie" temperature. This is in accordance with the temperature dependence of the dielectric constant interpreted through Cochran's theory.
Keywords
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