Abstract
The comparative experimental analysis of the polarization reversal kinetics in non-uniform Te(OH)62NH4H2PO4(NH4)2HPO4 (TAAP) and relaxor Sr0.61Ba0.39Nb2O6 (SBN:61) crystals have been performed. Micro-scale studies of domain switching in conjunction with electrical measurements allowed us to establish a relationship between local properties of domain dynamics and macroscopic response; polarization hysteresis loop and switching currents. We investigated the microscopic features of 180 degree domain walls dynamics and relate its dynamics to the defect structure in both type of the crystals. The domain structure was studied by means of the nematic liquid crystal decoration method.
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