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PMN-PT lead magnesium niobate-lead titanate single crystal material has the characteristics of high piezoelectric constant, large electromechanical coupling coefficient, high dielectric constant and low loss, especially the piezoelectric performance is better than ordinary The piezoelectric material should be improved by about 10 times, so that it can be used in a wider range of application fields than traditional PZT piezoelectric ceramics, such as sonar, stacked drive, ultrasonic imaging, optics, etc. It has been recognized and applied.
Product Description
PMN-PT lead magnesium niobate-lead titanate single crystal material has the characteristics of high piezoelectric constant, large electromechanical coupling coefficient, high dielectric constant and low loss, especially the piezoelectric performance is better than ordinary The piezoelectric material should be improved by about 10 times, so that it can be used in a wider range of application fields than traditional PZT piezoelectric ceramics, such as sonar, stacked drive, ultrasonic imaging, optics, etc. It has been recognized and applied.
Material Properties
| Main performance parameters | |
| molecular formula | [Pb(Mg 1/3 Nb 2/3 )O 3 ] (1-x) - [PbTiO 3 ] x, X=0.24-0.40 |
| Crystal structure | Quartet, (nearly cubic) |
| Cell parameters | a=4.024 Å (R3m) |
| melting point | 1280°C |
| growth method | Crucible drop method (Bridgeman method) |
| density | 8.1 g/ cm3 |
| Moh's hardness | 3.5 |
| Thermal expansion coefficient | 10.4x10 -6 /K |
| Dielectric constant (polarization) ε | 4000-5500 @1KHz |
| Piezoelectric constant d 33 | 1200-1500;1500-2000;2000-2500 pC/N |
| Curie temperature | 135-150℃ |
| phase transition temperature | 50-90°C (monoclinic-tetragonal phase transition) |
| motor coupling constant | K33 (longitudinal mode): ˃ 92%; Kt (transverse mode): 59-62%; K33 (beam mode) 84-88% |
| Coercive electric field | 2-2.5 kv/cm |
| Orientation | <100>, <110> ,<111> |
| Crystal orientation tolerance | ±0.3-0.5° |
| size | 5x5mm, 10x10mm, 20x20mm, Dia50.8mmCan be customized according to customer needs. |
| thickness | 0.5-10mm |
| Package | Class 100 packaging bag, class 1000 ultra-clean room. |
