Abstract
To investigate the effect of dc-bias field on the domain structures, the authors observed polarization–electric field (P-E) hysteresis loop with corresponding multidomain structures on (001)cub and monodomain structures on (111)cub surfaces. The coercive field was found to increase from 4 kV/cm for the (001) to 9 kV/cm for the (111) orientations. Corresponding changes in the area of the hysteresis loops were observed. Piezoelectric coefficient (d33) was found to increase to (a) 860 pC/N for tetragonal, (b) 1255 pC/N for the rhombohedral and (c) 2100 pC/N for the monoclinic phases on (001)cub surface.
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