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lgs crystal
lgs crystal

LGS Substrate

Gallium silicate lanthanum crystal (LGS) is a kind of multifunctional crystal with excellent performance. The dielectric, elastic and piezoelectric constants of LGS crystal are obviously higher than those of quartz, and the electromechanical coupling coefficient of LGS crystal is 2-3 times that of quartz, which can be used to manufacture surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices.


OST Photonics offers high quality LGS substrates for researchers and industries. Crystal orientation, size and thickness can be customized according to your requirements.


Application of LGS Substrate


  • Surface acoustic wave (SAW) devices

  • Bulk acoustic wave (BAW) devices


Advantages of LGS Substrate


  • Good thermal stability

  • Low equivalent series resistance

  • High electromechanical coupling coefficient (2~3 times of quartz)


Ability of LGS Substrate


  • Orientation:<100>,<001>, etc.

  • Dimension: 10x10mm, 15x15mm, 5x5mm, etc.

  • Thickness: 0.5mm, 1.0mm, etc.

  • Available items: substrates, blanks and customized optics


Specification and Properties of LGS Substrate


Crystal Structure

Trigonal

Lattice Constant

a=8.170 Å   c=5.099 Å

Melting Point

1470 ℃

Density

5.75 g/cm3

Hardness

5.5~6.5 Mohs

Electromechanical Coupling Coefficient

0.28~0.46

Growth Method

Czochralski

Orientation

<100>,<001>, etc.

Orientation tolerance

±0.5° or better

Dimension

10x10mm, 15x15mm, 5x5mm, etc.

Dimension Tolerance

±0.1 mm or better

Thickness

0.5mm, 1.0mm, etc.

Thickness Tolerance

±0.05 mm or better

Surface Finish

Single side polished (SSP)/Double sides polished (DSP)

Roughness

Ra≤5Å

Package

Class 100 clean bag, Class 1000 super clean room

  

Contact Us
Welcome your presence, you can send us an email, we will get in touch with you within 24 hours.
Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
sales@ostphotonics.com; info@ostphotonics.com +86-0571-86780460