LaSrAlO4
The strontium lanthanum aluminate 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.
CasCrysTech (CCT) provides high quality LaSrAlO4) crystal to the clients.
Uses/Applications
High-temperature superconductor (HTSC) YBCO and others.
Features/Benefits
Has no twins and phase transitions from the melting point to the low temperature.
Has the same structure as the high-temperature superconductor YBCO.
<001> plane has a moderate lattice mismatch with YBCO<001>. (2.5~3.5%).
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.
-
Crystal Structure
Tetragonal
Growth Method
Czochralski
Lattice Constant
a=3.756Å c=12.63 Å
Melting Point
1650℃
Density
5.92(g/cm3)
Mohs Hardness
6-6.5(mohs)
Dielectric Coefficient
ε=16.8
Dimension
10x3mm,10x5mm,10x10mm,15x15mm,20x15mm,20x20mm
Ф15,Ф20,Ф1″,Ф2″,Ф2.6″
Thickness
0.5mm,1.0mm
Polishing
One side or two sides
Orientation
<001>
Crystal Plane Orientation Accuracy
±0.5°
Edge Orientation Accuracy
2°(Special requirements can reach within 1°)
Bevel Wafer
According to specific requirements, wafers with edge-oriented crystal planes inclined at a specific angle (inclination angle 1°-45°) can be processed.
Surface Roughness
Ra≤5Å(5×5µm)
Package
Class 100 clean bag, Class 1000 super clean room
-
Dimension
10x3mm,10x5mm,10x10mm,15x15mm,20x15mm,20x20mm
Ф15,Ф20,Ф1″,Ф2″,Ф2.6″
Thickness
0.5mm,1.0mm