Lead magnesium niobate lead titanate (PMN-PT) [Pb (Mg1/3Nb2/3) O3] (1-x) - [PbTiO3] x single crystal material, as a new type of composite perovskite structure piezoelectric material, has the characteristics of high piezoelectric constant, large electromechanical coupling coefficient, high dielectric constant, low loss, excellent nonlinear optical performance and pyroelectric performance, especially the piezoelectric performance is about 10 times higher than ordinary piezoelectric materials, making it more widely applicable than traditional PZT piezoelectric ceramics. It can not only meet the application needs as the core material of the new generation of high-performance piezoelectric transducers, nonlinear optical devices and optoelectronic detection devices (such as infrared detectors), but also be used as a new generation of nonlinear optical devices and optoelectronic detection devices (such as infrared detectors). The vast number of researchers have provided excellent research carriers.
The new type of ferroelectric single crystal represented by lead indium niobate lead magnesium niobate lead titanate (Pb (In_ (1/2) Nb_ (1/2) O3) - Pb (Mg_ (1/3) Nb_ (2/3)) O3 PbTiO3, PIN-PMN-PT, PIMNT) is a popular research object in the field of functional materials. Ferroelectric single crystals have become important materials for manufacturing new generation high-performance ultrasonic transducers, actuators, sensors and other electromechanical devices.
application
It can have a wider range of applications than traditional PZT piezoelectric ceramics, not only meeting the needs of new generation high-performance piezoelectric transducers, nonlinear optical devices, and optoelectronic detection devices (such as infrared detectors) as core materials, but also providing a good research carrier for researchers.
characteristic
Improved the phase transition temperature and coercive force field of the product.
Mechanical and electrical coupling coefficient k33 to 0.94; Field induced strain s>1.7%.
The piezoelectric coefficient of d33 is 4-5 times higher than PZT, and the dielectric loss is 1-3 times lower than PZT.
Performance Parameter
| Formula | [Pb(Mg1/3Nb2/3)O3] (1-x)- [PbTiO3] x， X=0.24-0.40 |
| Structure | Tetragonal |
| Lattice constant | a=4.024 Å (R3m) |
| Melting Point | 1280℃ |
| Growth method | Bridgman |
| Density | 8.1 g/cm3 |
| Hardness | 3.5 |
| Thermal Expantion | 10.4x10-6/KB |
| Dielectric constant (polarization)ε | 4000-5500@1KHz |
| Piezoelectric constantd33 | 1200-1500;1500-2000;2000-2500 pC/N |
| Curie Temperature | 135-150 ℃ |
| Phase Changing Temperature | 50-90℃（Monoclinic-etragonal phase transition） |
| Electric-Mechanic coupling constant | K33(L-mode)：˃ 92%； Kt(T-mode)：59-62%; K33（Beam mode）84-88% |
| Coercive electric field | 2-2.5 kv/cm |
| Orientation | <100>,<110>,<111> |
| Orientation tolerance | ±0.3-0.5° |
| Size | 5x5mm, 10x10mm, 20x20mm,Dia50.8mm. Can be customized. |
| Thickness | 0.5-10mm |
| Package | Class 100 clean bag, in single wafer containers, under a nitrogen atmosphere. |
