Parameters of microdischarges occuring at surfaces of repolarized ferroelectrical materials

Parameters of the microdischarges occuring at the surfaces of the repolarized ferroelectric materials have been investigated. It has been found that in the case of BaTiO3ceramic the number of microdischarges increases linearly with increasing repolarizing voltage Upp, the photoelectric parameters of individual discharges being unchanged. The photoelectric and current parameters for system with TGS are very similar but the dependence of the amplitude of the current pulses on the repolarizing voltage differs distinctly from that for BaTiO3.