A Bi2ZnB2O7 single crystal measuring
45 mm × 35 mm × 15 mm was grown by using the Kyropoulos
method. The as-grown crystal showed distinct crystal facets (001),
(010), and (110), among others, which were consistent with the ideal
growth morphology predicted by the Bravais-Friedel and Donnay-Harker
method. The electric, elastic, and piezoelectric properties of the
Bi2ZnB2O7 single crystal were examined,
using the impedance and pulse-echo methods for the first time. The
independent piezoelectric coefficients d
15, d
24, d
31, d
32, and d
33 were evaluated and found to be of the value of 1.4, −5.5,
2.5, −6.4, and 1.1 pC/N, respectively. The contributions of
the crystal symmetry space group to the piezoelectric property were
analyzed from the viewpoint of polyhedral distortion and net dipole
moment. The temperature-dependent behaviors of the electroelastic
properties were characterized in the temperature range from room temperature
to 500 °C. Within this temperature range, the highest electromechanical
coupling factor k
32 (14.5%) and piezoelectric
coefficient d
33 (1.1 pC/N) exhibited temperature-independent
behavior.