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.
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Siegwarth et al. (1976) studied this question.
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