LGS
Keywords:
LGS
Category:
- Details
- Characteristics
- Parameters
- Application
-
- Commodity name: LGS
Lanthanum gallium silicate (LGS) crystals are a novel piezoelectric material with broad prospects in the manufacturing of surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices. At the same time, LGS crystals can be used to make electro-optic Q-switches. Devices made from LGS crystals exhibit high thermal stability.
Lanthanum gallium silicate (LGS) crystals are a type of high-performance, multifunctional crystal. LGS crystals have significantly higher dielectric, elastic, and piezoelectric constants than quartz, and their electromechanical coupling coefficient is 2-3 times that of quartz. They can be used to manufacture surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices. Simultaneously, LGS crystals can be used to make electro-optic Q-switches, with performance comparable to DKDP crystal Q-switches. Devices using LGS crystals as a material exhibit high thermal stability.
Main Features Points:
High thermal stability
Low equivalent series resistance
Electromechanical coupling coefficient is 3-4 times that of quartz
Typical Applications:
Electro-optic Q-switch
Surface acoustic wave filter
Bulk acoustic wave filter, resonator
Gyroscope, etc.
-
Molecular Formula
La 3 Ga 5 SiO 14
Crystal Structure
Trigonal
Density
5.754g/cm³
Melting Point
1470℃
Mohs Hardness
6.6
Relative Permittivity ε 11 /ε 0 =19.2; ε 33 /ε 0 =50.7
Thermal Expansion Coefficient
α 11 =5.07×10 -6 /K; α 33 =3.60×10 -6 /K
Piezoelectric Constant
e 11 =0.43; e 22 =0.1039
-
Size Specifications
Φ2 inches, Φ3 inches, 10mm×10mm×0.5mm, 20mm×20mm×0.5mm or customized
Thickness Tolerance
±0.02mm
Cutting Direction
X/Y/Z, (0,138.5,27) or customized, accuracy ±0.2°
Parallelism
<30"
Verticality
<15’
Planarity
<λ/10@633nm
Chamfer
<0.1mm@45°
Surface Finish
10/5
Related Products
Professional R&D, design, production and sales of crystal materials and their application devices
Anhui Crystro Crystal Materials Co., Ltd.
Address: No. 176, Yunhai Road, Hefei Economic and Technological Development Zone, China