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LaAlO3 substrate

LaAlO3 substrate

 

The main performance parameters
Crystal system
Hexagonal (room temperature)
Cubic (> 435 ℃)
Lattice constant
Hexagonal a = 5.357A c = 13.22 A
Cubic a = 3.821 A
Melting point
2080℃
Density
6.52 (g / cm 3)
Hardness
6-6.5 (mohs)
Thermal expansion coefficient
9.4x10 -6 / ℃
Permittivity
ε = 21
Loss tangent (10ghz)
~ 3 × 10 -4 @ 300k, ~ 0.6 × 10 -4 @ 77k
Color and Appearance
Brown-yellow to brown
Feature
Suitable for microwave electronics
Growth method
Czochralski method
Standard Size (mm)
10x3, 10x5, 10x10, 15x15,, 20x15, 20x20,
Ф20mm, Ф1"(25.4mm), Ф2"(50.8mm) 
Standard Thickness
0.5mm, 1.0mm
Polishing
Single side polished or double side polished
Orientation
<100>, <110>, <111>
Orientation accuracy:
± 0.5 °
Edge orientation accuracy:
2 ° (Can reach within 1°)
Other direction of substrate
According to specific requirements, we can process substrate with orientation in off angle (1 ° -45 °)
Surface Roughness(Ra):
≤ 5Å (5μm × 5μm)
Package
class-100 clean bag,

 

Lanthanum aluminate (LaAlO3) substrate single crystal is the most important industrialized, large-size high-temperature superconducting thin film single crystal substrate material. It is grown by Czochralski method, we can get two inches in diameter and larger single crystals and the substrate. It works with high-temperature superconducting materials lattice well matched, such as YBaCuO. Lower dielectric constant, low loss microwave, and thus suitable for production of high-temperature superconducting microwave electronic devices (such as  high-temperature superconducting microwave filters in the remote communications.). Has great practical and potential applications.

 

 
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