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0.25mm Thickness 42°Y Lithium Tantalate LiTaO3 Wafer
Lithium Tantalate (LT, LiTaO3) has unique properties, which as a material finds uses in Electro-Optical and Acousto-Optical applications. These can be : surface acoustic wave devices, bulk acoustic wave devices, piezo-electric transducers and piezoelectric sensors.The 36° and 42 ° cuts of Lithium Tantalate have shown widespread adoption for the telecommunications mobile phone handset market at frequencies from 800 to 2100 MHz. These orientations show an optimized bandwidth / insertion loss trade off in performance and are dominating the ever expanding mobile handset sales.
Crystro's LiTaO3 lithium tantalate crystal has >99.99% purity. Find high-quality lithium tantalate bulk crystals, wafers and substrates
Crystro provides:
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:
| Type | Boule | Wafer | ||
| Specifications | ||||
| Diameter | Φ3″ | Φ3″ | Φ4″ | |
| Length or Thickness | ≤100mm | ≤50mm | 0.35-0.5mm | |
| Orientation | 127.86°Y,64°Y,135°Y,X,Y,Z,and other cut | |||
| Ref. Flat Orientation | X,Y | |||
| Ref. Flat Length | 22±2mm | 2mm | 22±2mm | 32±2mm |
| Front Side Polishing | Mirror polished 5-15Å | |||
| Back Side Lapping | 0.3-1.0μm | |||
| Flatness(μm) | ≤15 | |||
| Bow(μm) | ≤25 | |||
Note: Other sizes and coatings are available upon request.
