SrLaAlO₄ crystal substrates offer an excellent lattice match with perovskite structure superconductors, along with a low dielectric constant, making them highly suitable for microwave and high-frequency applications. Stanford Optics possesses extensive experience in manufacturing and supplying high-quality optical products.
SrLaAlO₄ crystal is a promising substrate material for high-temperature (high Tc) superconducting films. It provides superior lattice matching with perovskite structure superconductors and boasts a low dielectric constant, which is beneficial for microwave and high-frequency device performance. Furthermore, its stable structure exhibits significantly fewer defects compared to SrTiO₃.
SrLaAlO₄ crystal substrates are utilized across various industries due to their exceptional properties:
Our SrLaAlO₄ Crystal Substrates are meticulously handled during storage and transportation to preserve the product's original quality and integrity.
Purity |
99.99% |
Color |
Light Brown |
Crystal Structure |
Tetragonal |
Lattice Constant |
a = b = 3.756 A, C = 12.636 A |
Density |
5.92 g / cc |
Melt Point |
1650℃ |
Thermal Expansion Coeff. |
12 ppm / ℃ |
Dielectric Constant |
16.81 at a axis 20.02 at c axis |
Comparison of SrTiO3 - LaAlO3 - SrLaAlO3
Crystal |
SrTiO3 |
LaAlO3 |
SrLaAlO4 |
Structure |
Cubic |
Rhombohedral (25℃) Cubic (> 435℃) |
Tetragonal |
Lattice Constant |
a=3.905 |
a=3.821 A |
a=b=3.756 A, c= 12.636 |
mismatch to YBCO (a=3.9) |
+0.12% |
-2.0% |
-3.7% |
Dielectric Constant |
~300 |
~ 25 |
~ 17 |
Grown Method |
Vernuil |
CZ |
CZ |
Thermal expansion (x10-6/℃) |
10.4 |
10 |
12 |
Melting point |
2080℃ |
2080℃ |
1650℃ |
Density g/cm3 |
5.175 |
6.52 |
5.92 |
Max. Crystal Size |
30 mm dia. |
75 mm dia |
35 mm dia |
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