LSAT Substrate
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...
LSAT Substrate
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 o...
- ManufacturerOST Photonics
- CategoryCrystal Wafer and Substrate
- Lead TimeQuoted per order
- CustomizationSize, orientation and surface finish to drawing
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.
Features
- Good lattice matching with YBCO
- No twins and phase transitions from the melting point to the low temperature
- Low thermal expansion coefficient
Applications
- Superconductive device
Processing Capability
- 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 Substrate
| 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 |
Other Crystal Wafer and Substrate Materials
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