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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

    Densityg/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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