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LGS Substrate

Advantage：

1.High thermal stability

2.Low equivalent series resistance and electromechanical coupling coefficient 3-4 times of quartz

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LGS can be used to make piezoelectric and electro-optical devices. It has high temperature piezoelectric properties. The electromechanical coupling coefficient is three times of that of quartz, and the phase transition temperature is high (from room temperature to melting point 1470 ℃). It can be used in saw, BAW, high temperature sensor and high power, high repetition rate electro-optic Q-switch.

Properties:

Material	LGS （La₃Ga₅SiO₁₄）
Hardness (Mho)	6.6
Growth	CZ
System	Rigonal system, group 33 a=8.1783 C=5.1014
Coefficient of thermal expansion	a11:5.10 a 33:3.61
Density（g/cm³）	5.754
Melting Point(°C)	1470
Acoustic Velocity	2400m/Sec
Frequency Constant	1380
Piezoelectric Coupling	K2 BAW: 2.21 SAW:0.3
Dielectric Constant	18.27/ 52.26
Piezoelectric Strain Constant	D11=6.3 D14=5.4
Inclusion	No

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