We fabricated lead-free Bi 4−xNdxTi 2.97 V 0.03 O 12 (x = 0.25∼1.00; BNdTV-x) ceramics using the conventional solid-state reaction method and investigated their ferroelectric and piezoelectric properties. BNdTV ceramics exhibited the phase transition from orthorhombic to pseudo-tetragonal structure with increasing Nd concentration. At the morphotropic phase boundary of x = 0.85, BNdTV ceramics showed the highest values of P r (13 μC/cm 2 ), k t (17%) and Q m (2130), which are promising for applications to high frequency resonators.
Acknowledgment
This work was supported by a grant from the device and materials technology development program of the Ministry of Commerce, Industry and Energy, Republic of Korea.