Abstract
The photoconducting compound SbSI was found to be ferroelectric with a Curie point at 22°C. It has a high spontaneous polarization of and a small coercive field strength of V/cm at 0°C. The dielectric constant at the Curie point reaches values as high as 50 000. The switching is relatively fast and depends on the applied field according to a power law. It appears that the unusually large field-induced shift in absorption edge in SbSI and its electromechanical behavior can be explained by the fact that the material becomes ferroelectric below room temperature.
- Received 11 May 1962
DOI:https://doi.org/10.1103/PhysRev.127.2036
©1962 American Physical Society