Pmn-PT Crystal
PMN-PT Crystal
The lead magnesium niobate-lead titanate (PMN-PT) crystal is a new generation of piezoelectric materials. The chemical structural formula of PMN-PT is (1-x)[Pb(Mg1/3Nb2/3)O3]-x[PbTiO3].The PMN-PT is formulated to exhibit high piezoelectric coefficient, large electric-mechanical coupling coefficient, high dielectric constants and low dielectric losses. As a rule, the piezoelectric coefficient is higher than PZT ceramics, which results in improving bandwidth, sensitivity and source level in applications.
We could provide high quality PMN-PT crystals with the diameter of 2 inches for a broad range of applications.
Typical Capability of PMN-PT [001]
|
 |
Electrodes
Ag 0.07um
Au (Cr or Ni/Au/Ag/Au) 1000-10000
Pt 0.07um
Reference Capability of PMN-PT Crystal
Properties Dependence on Crystallographic Direction of PMN-PT Crystal
These typical values are provided for design information only. Standard tolerances are approximately+/-20% of these values. Material properties are measured according to standard IEEE and DOD definitions and measuring techniques. All data shown represent nominal characteristics (20 ℃) 24 hours after polarization.
PMN-PT Specifications:
极化/测量方向 |
[110] |
[010] |
[100] |
[001] |
[011] |
[111] |
|||
密度 ρ (g/cm 3 ) |
8.1 |
8.1 |
8.1 |
8.1 |
8.1 |
8.1 |
|||
耦合系数Kt |
- |
0.60 |
0.60 |
0.61 |
- |
- |
|||
耦合系数Kp |
- |
0.92 |
0.95 |
0.90 |
- |
- |
|||
泊松比σ E |
- |
0.16 |
0.27 |
0.27 |
- |
- |
|||
介电系数ε T |
4000-7000 |
4500-7000 |
4500-7000 |
4500-7000 |
4000-7000 |
3500-6500 |
|||
损耗tgδ% |
0.13 |
0.40 |
0.75 |
0.42 |
0.32 |
0.13 |
|||
压电常数d 33 |
800-1200 |
1500-2100 |
1500-2100 |
1500-2100 |
800-1200 |
200-400 |
|||
机械Q M |
- |
33 |
68 |
31 |
- |
- |
|||
其他方向 |
- |
<b> <c> [100][001] |
<b> <c> [001][100] |
<b> <c> [010][001] |
<b> <c> [001][010] |
<b> <c> [010][100] |
<b> <c> [100][010] |
- |
- |
耦合系数K 31 |
0.58 |
0.72 |
0.71 |
0.77 |
0.78 |
0.62 |
0.60 |
0.48 |
0.32 |
S 11 E (×10 12 m2 /N) |
- |
40.37 |
32.55 |
28.76 |
31.12 |
50.50 |
54.29 |
- |
- |
介电常数ε T |
4000-7000 |
4900 |
4200 |
4100 |
4200 |
5000 |
4900 |
4000-7000 |
3500-6500 |
d 31 (×10 12pc/N) |
-420 |
-930 |
-745 |
-735 |
-790 |
-920 |
-910 |
-410 |
-250 |
Tel: +86-21-64384700 email: info@sinocera.net