Effect of the «Freezing» of Domain Boundaries in Group A 2 BX 4 Crystals near the Curie Point.

Harmonic analysis of the dielectric hysteresis loops near the phase transition temperatureTcobtained under application of harmonic electric field with intensity above the intensity of the coercive field is presented. It is shown that, the direction of polarization reverses when the field value satisfies conditionEc=Emsin ϕ0. The increase inEcwhile approachingTcis shown to be the reason for the anomalous temperature independent behavior ofEcoer. [ABSTRACT FROM AUTHOR]