The effective piezoelectric strain constant d33 and electromechanical coupling factor k33 of polycrystalline lead zirconate titanate (PZT) at different cutting angles have been measured by using the IEEE standard resonance method. It was found that for tetragonal PZT 48/52, the effective d33 and k33 monotonously decreases as the cutting angle canted from the poling direction increases. However, for rhombohedral PZT 54/46, the effective d33 has the maximum value along a direction which is canted about 45° away from the poling direction, while the effective electromechanical coupling factor is not sensitive to the cutting direction and remains almost constant in the cutting angle range from 0° to 45°.
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Condensed Matter Physics
- Materials Chemistry