Polarization and dielectric constant of potassium tantalate

摘要

The polarization of a KTaO3 single crystal and some KTaO3 ceramic specimens has been measured using a dc technique. A remanent polarization was found as well as hysteresis in the polarization as a function of field. Peaks in the ac dielectric constant were also observed. These dielectric properties are attributed to dielectric relaxation effects and the existence of an electret state.