SAW Grade LiTaO3 Crystal Substrates Growth Manufacturer
Lithium tantalate (LiTaO3) is a perovskite which possesses unique
optical, piezoelectric and pyroelectric properties which make it
valuable for nonlinear optics, passive infrared sensorssuch as
motion detectors, terahertz generation and detection, surface
acoustic waveapplications, cell phones and possibly pyroelectric
nuclear fusion. Considerable information is available from
commercial sources about this salt.
Note: Other sizes and coatings are available upon request.
Typical product sizes available
Bulk crystals:
up to 4 inch diameter and 50 mm thick
Crystal substrates / wafers (single side or double side polished)
10 x 10 x 0.5 mm
2 inch diameter x 0.5mm thick
4 inch diameter x 0.5mm thick
.
Crystal orientations available: Z-cut, X-cut, Y-cut
Crystro's LiTaO3 lithium tantalate crystal has >99.99% purity. Find
high-quality lithium tantalate bulk crystals, wafers and substrates
Basic Properties of LiTaO3:
| Crystal Structure | Trigonal, Space group R3c, Point group 3m |
| Cell Parameters | a=5.154Å,c=13.781Å |
| Melting Point | 1650℃ |
| Curie Temperature | 607℃ |
| Mohs Hardness | 5.5 |
| Density | 7.46g/cm3 |
| Dielectric Constants | ε11/ε0:51.7 |
| ε33/ε0:44.5 |
| Elastic Stiffness Coefficients | CE11:2.33(×1011N/m2) |
| CE33:2.77(×1011N/m2) |
| Piezoelectric Strain Constants | d22:2.4(×10-11C/N) |
| d33:0.8(×10-11C/N) |
| Transmission range | 400-4500nm |
| Electro-optical coefficients | r33=30.4pm/V |
| Refractive index at 632.8nm | no=2.176,ne=2.180 |
Typical Specifications
| Specifications | Boule | Wafer |
| Diameter | Φ3'' | Φ4'' | Φ3'' | Φ4'' |
| Length or Thickness (mm) | ≤100 | ≤50 | 0.35-0.5 |
| Orientation | 127.86°Y,64°Y,135°Y,X,Y,Z, and other cut |
| Ref.Flat Orientation | X,Y |
| Ref.Flat Length | 22±2mm | 32±2mm | 22±2mm | 32±2mm |
| Front Side polishing | / | Mirror polished 5-15 Å |
| Back Side Lapping | / | 0.3-1.0μm |
| Flatness (μm) | / | ≤15 |
| Bow (μm) | / | ≤25 |
Crystro can offer other size and specification of wafers upon
request.
