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lsat substrate
lsat substrate

LSAT Substrates

The strontium lanthanum aluminate (LSAT or (La,Sr)(Al,Ta)O3)crystal has no twins and phase transitions from the melting point to the low temperature. It has the same structure as the high-temperature superconductor YBCO. Compared with other substrates, the <001> plane has a moderate lattice mismatch with YBCO<001>. (2.5~3.5%). At the same time, the thermal expansion coefficient of this crystal is lower than that of other perovskite crystals, which can deposit films at lower temperatures to improve lattice mismatch and reduce stress.


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


Application of LSAT Substrates


  • Superconductive device


Advantages of LSAT Substrates


  • Good lattice matching with YBCO

  • No twins and phase transitions from the melting point to the low temperature

  • Low thermal expansion coefficient


Ability of LSAT Substrates


  • Orientation:<100>,<110>,<111>, etc.

  • Dimension: 1”, 2”, 10x3mm, 10x5mm, 10x10mm, 15x15mm, 20x15mm, 20x20mm, etc.

  • Thickness: 0.5mm, 1.0mm, etc.

  • Available items: wafers, substrates, blanks and customized optics


Specification and Properties of LSAT Substrates


Crystal Structure

Quartet

Growth Method

Czochralski

Lattice Constant

a=3.756 Å   c=12.63 Å

Melting Point

1650 ℃

Density

5.92 g/cm3

Hardness

6-6.5 Mohs

Dielectric Coefficient

ε=16.8

Orientation

<100>,<110>,<111>, etc.

Orientation Tolerance

±0.5° or better

Dimension

1”, 2”, 10x3mm, 10x5mm, 10x10mm, 15x15mm, 20x15mm, 20x20mm, 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