Abstract
Ternary solid solution crystals of 0.19Pb(In 1/2Nb 1/2)O 3- 0.46Pb(Mg 1/3Nb 2/3)O 3- 0.35PbTiO 3 [PIMNT(19/46/35)] with dimensions of 35 × 38 × 15 mm 3+ were grown by the top-seeded solution growth (TSSG) method. The dielectric, piezo- and ferroelectric properties of the grown crystals were characterized. The ternary piezocrystals exhibit a Curie temperature T C 190°C and a tetragonal-rhombohedral phase transition temperature T R-T 130°C, which are increased significantly compared with T C ≈ 155°C and T R-T ≈ 80°C of PMN-PT crystals. The dielectric constant (ε′) and dielectric loss tangent (tan ) are 4300 and 0.40 at room temperature. The piezoelectric coefficient d 33 is found to be 2380 pC/N. The longitudinal electromechanical coupling factor k 33 reaches 90 at room temperature. A peak-to-peak bipolar strain value of 0.13 is obtained at E ≈ 14 kV/cm. The coercive field Ec and remanent polarization Pr are 5.50 kV/cm and 27.10 μC/cm 2, respectively, which are also improved from the vales of PMN-PT crystals.
| Original language | English |
|---|---|
| Article number | 034105 |
| Journal | Journal of Applied Physics |
| Volume | 111 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1 Feb 2012 |
| Externally published | Yes |