Acoustic Grade Lithium Tantalate Crystal And Wafer
Acoustic Grade Lithium Tantalate Crystal And Wafer
Lithium tantalate (LiTaO3, LT for short) crystal is an important multifunctional crystal material, which has excellent piezoelectric, ferroelectric, acousto-optic and electro-optic effects. Therefore, it has become the basic functional material in the field of surface acoustic wave (SAW) devices, optical communication, laser and optoelectronics. The polished LT chip is widely used in the manufacture of electronic communication devices such as resonators, filters, transducers, etc., especially with its good mechanical and electrical coupling, temperature coefficient and other comprehensive performance, it is used in the manufacture of high-frequency surface acoustic wave devices, and is used in mobile phones, walkie-talkies, satellite communications, aerospace and many other high-end communication fields.
Basic Properties
| Crystal Structure | 3M Oblique hexahedral lattice group 3M |
| Lattice Parameters | a=5.154,c=13.783 |
| Density | 7.45g/cm3 |
| Melting Point | 1650℃ |
| Curie Point | 605℃ |
| Mohs Hardness | 5.5-6 Moth |
| Dielectric Constant | ε11/ε0=39-43; ε33/ε0=42-43 |
| Thermal Conductivity | 1015W/m/℃ |
| Thermal Expansion Coefficient | a1=a2=1.61×10-6/℃, a3=4.1×10-6/℃at25℃ |
| Color | colorless |
| Main properties include: Transparent Range | 0.4-5.0mm |
| Refractive Indices | n0=2.176 ne=2.180 @ 633mn |
| E-O E-O Coefficient | R33=30.4 |
附件下载：
