Abstract
Single crystals of ferroelectric (1−x)Bi0.5Na0.5TiO3–xBi0.5K0.5TiO3 (BKT) solid solution with rhombohedral structure were grown by flux method in the composition range of 0<x<0.14. The polarization hysteresis, electric-field-induced strain, and temperature dependence of dielectric permittivity were investigated along the [100]cubic direction. Although small substitution of BKT suppressed the remanent polarization from 38 μC/cm2 at x=0 to about 15 μC/cm2 at x>0.02, piezoelectric strain constant (d33) was enhanced with increasing x up to 297 pm/V at x=0.14.
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