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

    5.92g/cm3

    Mohs Hardness

    6-6.5mohs

    Dielectric Coefficient

    ε=16.8

    Dimension

     

    10x3mm10x5mm10x10mm15x15mm20x15mm20x20mm


    Ф15,Ф20Ф1″Ф2″,Ф2.6″

    Thickness

    0.5mm1.0mm

    Polishing

    One side or two sides

    Orientation

    001  

    Crystal Plane Orientation Accuracy

    ±0.5°

    Edge Orientation Accuracy

    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≤5Å5×5µm

    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