Single Crystal
Single Crystal
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Single Crystals



Omega Piezo Technologies produces PMT-PT piezoelectric single crystal components in a range of shapes and sizes.

Single crystals can exhibit much higher performance than piezoceramic materials including an order of magnitude higher strain levels.
The properties of these crystals are shown in the following table.

These components are grown in a raw crystal form and then machined to exacting tolerances. They are typically metallized with sputtered chrome/gold.




Cuts & Properties of PMN-PT Single Crystal


Poling and
Measuring Direction
<a>
[110] [010] [100] [001] [011] [111]
p (g/cm3) 8.2 8.2 8.2 8.2 8.2 8.2
Kt - 0.6 0.6 0.61 - -
Kp - 0.92 0.95 0.9 - -
σ-E - 0.16 0.27 0.27 - -
εT 650 4200 6300 4400 5700 3500
tg% 0.13 0.4 0.75 0.42 0.32 0.13
d33 185 1200-2100 800-1050 1100-1600 880 450
QM - 33 68 31 - -
Other two direction - <b><c> <b><c> <b><c> <b><c> <b><c> <b><c> - -
[100][001] [001][100] [010][001] [001][010] [010][100] [100][010]
K31 0.58 0.72 0.71 0.77 0.78 0.62 0.6 0.48 0.32
S11E(x10-12m2/N) - 40.37 32.55 28.76 31.12 50.5 54.29 - -
εT 650 4600 3900 3650 3750 4950 4750 5700 3500
d31(10-12pc/N) -160 -930 -745 -735 -790 -920 -910 -410 -250

The values above are provided for design information only. The Standard tolerances are approximately +/- 20% of these values. Standard IEEE and DOD definitions and measuring techniques are used to measure the data shown. This data represents characteristics 24 hours after Polarization. (20°C)

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