Lanthanum aluminate single crystal
- Growth : Czochralski
- Crystal structure : rhombohederal system perovskite structure, cubic >435°C
- Lattice constant : a = 5.357Å c = 13.22 Å at 25°C
- Lattice constant : a=3.821Å > 435°C
- Colorless
- Twin included
- Density : 6.51 g / cm3
- Melting point : 2180°C
- Thermal expansion coefficient : 9.5 X 10-6K-1
- Dielectric constant : 20-25
- Dielectric loss tangent (10 GHz) : ~6 X 10-5 at 77 K, 3 X 10-4 at 300K
- Size tolerance : ± 0.1mm
- Thickness tolerance : ± 0.05mm
- Paralellness : <= 0.02
- Flatness : λ/4, λ/2 (λ=633 nm)
- Surface roughness : Ra < 10nm, Rmax < 50nm
| Orientation | Size | Polish | Price |
|---|---|---|---|
| LaAlO3(100) < ±0.3° | 10 X 10 X 0.5mm3 | one side | Quote |
| LaAlO3(100) < ±0.3° | 10 X 10 X 0.5mm3 | both sides | Quote |
